<DIV class=quote><B>以下是引用<I>wolfgun</I>在2006-3-13 21:20:25的发言:</B><BR>
<>这个是截止阀<img src="attachments/dvbbs/2006-3/20063132154611193.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2006-3/20063132154611193.gif\');}" onmousewheel="return imgzoom(this);" alt="" /><BR>这个是闸阀<img src="attachments/dvbbs/2006-3/20063132154693735.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2006-3/20063132154693735.gif\');}" onmousewheel="return imgzoom(this);" alt="" /><BR>形状差不多?</P>
<P>不过鉴于目前阀门种类繁多,新型阀门不断出现,还是看看铭牌比较好</P></DIV>
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<P>这2个图一看就清楚了,谢谢</P>
<P>办公室里蒸汽管道上有个阀门,铭牌没了,就是截止阀!</P>
<P>截止阀有调节流量作用,是闸阀的话,可能现在就毁了</P>