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- diameter ratio scale 直径比标尺
- Length to diameter ratio of flexspline. 柔轮长度与内径之比。
- Screw of big length to diameter ratio, uniform plastication and high plasticizing capability. 大长径比螺杆、塑化均匀、塑化能力特高。
- When the pipe diameter ratio varies a little，the local resistance loss of sudden contraction changes insignificantly. 存在一个最佳弯径比，使得水平弯管的局部阻力损失最小。
- The wall thickness to its inner diameter ratio was calculated on basilar artery as an indictorof cerebral vasospasm under optical microscope. 光镜下测定基底动脉的动脉壁厚度和基底动脉的内径,以其比值作为脑血管痉挛的指标。
- One such natural ratio scale is time itself - the time it takes the brain to perform some elementary cognitive task, measured in milliseconds. 一个这样的自然的比率规模自己是时间 - 选大脑作秀一些初等认识的任务的时期，在毫秒内测量。
- There is a relationship between the trim exponents and impeller diameter ratio, namely the exponents vary with the ratio. 叶轮切割指数与直径比的确存在着某种关系，也就是切割指数随着切割后的直径比的变化而变化。
- Moreover, the reflected shock wave amplitude is reducing with increasing diameter ratio D/d and increasing length diameter ratio L/d. 反射激波压力最大值随吸收腔直径比D/d增加而减小，随吸收腔长径比L/d增加而降低。
- The influence of length to diameter ratio and addition of two kinds of fibers on the properties of MDF cement,the bending strength and tenacity and water resistance,are studied. 研究结果表明,碳纤维和玻璃纤维作为MDF水泥的增强材料均能够显著提高MDF水泥的力学性能和耐水性,玻璃纤维的效果优于碳纤维。
- The results showed that radioactivityc ontamination on surface of circulating currencies, and ratio scale of radioactivity in circulating currencies itself are in background range. 其结果说明某市流通货币无论表面放射性沾污，还是货币本身的放射性比度均在本底涨落范围。
- occipitofrontal/biparietal diameter ratio 枕额径顶骨间径比率
- Big Nozzle-to-Cylinder Diameter Ratio 大开孔率
- platelet count/spleen diameter ratio 血小板计数/脾径比值
- maximum blade width to diameter ratio 最大叶宽与直径比
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- extruder length to diameter ratio 挤压出机长度直径比
- The diameter of the tree-trunk is about 2 meters. 这树干的直径大约是2米。
- The axis of a circle is its diameter. 圆的轴线是其直径。
- Measure the diameter of this circle. 量一下这圆的直径。
- We must gauge the diameter of wire first. 我们必须先测量电线的直径。
