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you can add
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<div class="">Mesh.CharacteristicLengthMin = .1;</div>
<div class="">Mesh.CharacteristicLengthMax = 10;</div>
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<div class="">in the input file</div>
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<div class=""><span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; border-spacing: 0px;"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; ">
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<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; ">
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<div class="">------------------------------------------------------------------</div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Prof. Jean-Francois Remacle</span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Universite catholique de Louvain (UCL)</span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering</span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Institute of Mechanics, Materials and Civil Engineering (iMMC)</span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Center for Systems Engineering and Applied Mechanics (CESAME)</span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Tel : +32-10-472352 -- Mobile : +32-473-909930 </span></font></div>
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<blockquote type="cite" class="">
<div class="">Le 31 oct. 2017 à 01:38, 张明财 <<a href="mailto:csuzmc@163.com" class="">csuzmc@163.com</a>> a écrit :</div>
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<div class="">hello Prof JFR,</div>
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<div class="">Thank you very much . btw, how can i operate this command in Gmsh GUI?</div>
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<div class="">BEST WISHES</div>
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<div class="">Micky Jhon</div>
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在 2017-10-31 03:34:16,"Jean-François Remacle" <<a href="mailto:jean-francois.remacle@uclouvain.be" class="">jean-francois.remacle@uclouvain.be</a>> 写道:<br class="">
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gmsh -clmin .1 -clmax 10 myFile.geo
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<div class="">JFR<br class="">
<div class=""><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant-ligatures: normal; font-variant-position: normal; font-variant-caps: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; border-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: 0px;"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant-ligatures: normal; font-variant-position: normal; font-variant-caps: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; border-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: 0px;">
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<span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-position: normal; font-variant-caps: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; border-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: 0px;">
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<div class="">------------------------------------------------------------------</div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Prof. Jean-Francois Remacle</span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Universite catholique de Louvain (UCL)</span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering</span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Institute of Mechanics, Materials and Civil Engineering (iMMC)</span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Center for Systems Engineering and Applied Mechanics (CESAME)</span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Tel : +32-10-472352 -- Mobile : +32-473-909930 </span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; "><br class="">
</span></font></div>
<div class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; "> </span></font></div>
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<blockquote type="cite" class="">
<div class="">Le 30 oct. 2017 à 18:10, 张明财 <<a href="mailto:csuzmc@163.com" class="">csuzmc@163.com</a>> a écrit :</div>
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<div class=""><span style="font-size: 24px; color: rgb(136, 0, 0);" class=""><b class="">Hi Gmsher:</b></span></div>
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<div class=""><span style="font-size: 24px; color: rgb(136, 0, 0);" class=""><b class="">How can i control the </b><span style="font-size: 24px; font-family: arial, 'pingfang sc', stheiti, simsun, sans-serif; line-height: 22px;" class=""><b class="">maximal
and minimal lengths of mesh side?</b></span></span></div>
<div class=""><span style="font-size: 24px; color: rgb(136, 0, 0);" class=""><span style="font-size: 24px; font-family: arial, 'pingfang sc', stheiti, simsun, sans-serif; line-height: 22px;" class=""><b class=""><br class="">
</b></span></span></div>
<div class=""><font color="#880000" face="arial, pingfang sc, stheiti, simsun, sans-serif" class=""><span style="font-size: 24px; line-height: 22px;" class=""><b class="">Best wishes.</b></span></font></div>
<div class=""><font color="#880000" face="arial, pingfang sc, stheiti, simsun, sans-serif" class=""><span style="font-size: 24px; line-height: 22px;" class=""><b class=""><br class="">
</b></span></font></div>
<div class=""><font color="#880000" face="arial, pingfang sc, stheiti, simsun, sans-serif" class=""><span style="font-size: 24px; line-height: 22px;" class=""><b class="">Micky Jhon</b></span></font></div>
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