直径的豁免：Diameter exemption 直径长度比：length to diameter ratio 直径16毫米以下的单针筒圆型针织机：Single cylinder knitting machines,up to 165mm diameter ..
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影响腔室压力和温度的主要因素可以概括为气压和长度直径比。
The main factors that affect the pressure and temperature of the chambers can be summarized as air pressure and L/D.
“关键点在于，这一实验能够辨识出极其微小的长度变化，哪怕比质子的直径还要小。” 霍根说。
"The key thing is that such experiments are sensitive to changes in the length of the rulers that are far smaller than the diameter of a proton, " says Hogan.
木纤维长度、直径、双壁厚、长径比均随着树龄的增加而增加，其平均值分别为891。
The fiber length, diameter, cell wall thickness and ratio of length to width are 891.
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