... length-of-life test ==> 寿命试验 length-to-diameter ratio ==> 长度直径比 length-width ratio ==> 长宽比 ...
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length to diameter ratio 直径长度比 ; 长径比 ; 长度直径比
extruder length to diameter ratio 挤塑机长径比
high length to diameter ratio 大长细比
hole length to diameter ratio 长径比
length-to-diameter ratio of kiln 窑的长径比
length-to-diameter ratio of cylinder 圆筒长径比
Especially, the study on the needle-shape nozzle structural parameter is performed when the jet-pressure is changed. The nozzle structural parameter includes: nozzle diameter (d); length to diameter ratio(L/d; inlet angle and outlet diffusion angle.
着重研究了针型喷嘴的结构参数：喷嘴的孔径（d）、长径比（L/d）、入口角与出口扩散角，从而得出最佳的喷嘴结构参数。
参考来源 - 针型喷嘴结构对射流特性影响的实验研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This makes them incredibly strong and incredibly light, and they've already been manufactured in strands with a length-to-diameter ratio of 132 million to one.
这使得它们非常牢固但又令人难以置信的轻，并且它们已经被用来生产出长度直径比为1.32亿的绳链。
It shows that with the increasing of curvature radius, liner thickness, the length-to-diameter ratio of the charge, and decreasing of shell thickness, the velocity of EFP increase.
结果表明：随着药型罩曲率半径、装药长径比、壳体厚度的增大以及药型罩壁厚减少，EFP的速度增大。
Simplified analysis on a single fiber fin in the duct flow demonstrates that the heat transfer can be enhanced with the increasing length-to-diameter ratio and thermal conductivity ratio.
对单根纤毛肋进行的简化理论分析表明纤毛长径比和肋材与流体的导热系数比越大其强化换热作用越好。
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