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1)  specific diameter
比径
2)  radius ratio
径比
1.
Influence of radius of rounded corner of stepped shafts and radius ratio on fatigue life of shafts subjected to torsion;
扭转条件下过渡圆角半径及径比对圆轴疲劳寿命的影响
2.
The fatigue life of a circular shaft with different circular arc transition radius and radius ratio was studied.
在岛津EHF-EM100kN新型电液伺服疲劳实验机上研究了40Cr在扭转疲劳载荷下的超低周疲劳断裂问题;并绘制寿命随圆角半径和径比变化的曲线图。
3)  drum to rope ratio
筒径 绳径比
4)  rope to pulley ratio
绳径 轮径比
5)  low ratio of height to diameter
低高径比
1.
5 bulk metallic glass with low ratio of height to diameter have been studied by means of Instron Univeral-Testing Machine(IUTM) and scanning electron microscopy(SEM) at room temperature.
5大块非晶合金的室温低高径比压缩变形和断裂行为。
6)  Aspect ratio
长径比
1.
The effect of aspect ratio on the mechanical behavior of composite;
增强短纤维长径比对复合材料力学性能的影响
2.
The thickness of PPTA gel has significant influence on gel maturing,relative molecular mass,aspect ratio and morphology of the pulp.
PPTA挤出冻胶体厚度对冻胶体熟化效果、浆粕的相对分子量、长径比及表观形貌均有显著影响。
3.
Filler aspect ratio and filler orientatio n were found to evidently affect the composites conductivity.
研究了短切碳纤维/乙烯基酯树脂导电性与短切碳纤维含量、长径比、纤维取向的关系及其PTC效应。
补充资料:高径比
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性质:反应器的高度与直径之比。当通过动力学计算确定了反应器的体积后,便需要选取反应器的直径和计算出它的高度,并由此得出反应器的高度与直径之比。高径比不是随意决定的,而是根据造价和操作费用的综合经济效益求得的。直径较大的容器,特别是高压设备,壁厚增大,造价较高,但在相同处理量下流速低,输送功率小。改变高径比也会改变床层内的温度分布。故需慎重选用高径比。

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