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
In truth, Dr Watson, co-discoverer of the double-helical structure of DNA back in the 1950s, had a point.
事实上，在1950年当沃森博士合作发现DNA的双螺旋结构的时候，他的断言的确有一定的道理。
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。
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