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 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
double helical bevel gear 人字齿伞齿轮
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。
Objective To investigate the clinical value of double-helical ct angiography (DCTA) and MR angiography (MRA) for intracranial aneurysm (an).
目的评价双层螺旋ct血管造影(DCTA)与MR血管造影(MRA)诊断脑动脉瘤(AN)的价值。
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