双螺旋的 bipatch; double helical; double-helical; narrow groove 双螺旋灯丝 coiled coil; coiled-coil filament; double helical heater .
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double helical gear pump 人字齿齿轮泵
double helical tooth 人字齿 ; 人字齿轮
double helical pinion 人字小齿轮
double helical spring 复式螺旋弹簧
double helical spur gear 人字正齿轮 ; 人字齿轮
double helical gear planer 人字齿轮刨床
double helical mixer 双螺浆混合器
double helical spur wheel 人字齿轮
double-helical gearbox 人字齿轮减速器
The double-helical DNA is a very important intermediate in storing and transferring genetic informations.
DNA双螺旋链是储存和传递遗传信息的重要载体。
The Flowserve GR series, double-helical, herringbone type gear pumps have long been a workhorse of the general industry.
长期以来，福斯gr系列人字齿型齿轮泵已成为一般工业的得力助手。
Synthesis of Intramolecular Double-helical Compound Connecting Chiral 2,2'-Substituted 1,1'-Binaphthyl with meta-Pyridine Bridges.
光学活性的2，2'-二取代1，1'-联萘和间吡啶桥构筑的分子内双螺旋化合物的合成。
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