大径指过外螺纹牙顶或内螺纹牙底的圆柱面直径。
The root of the external thread or the crest of the inner thread .
实验结果表明：相同径厚比的铸铁圆柱壳的破坏机理主要因素为变形不协调。
Experiment results shown that the main factor of the breakage reason of the cast-iron cylindrical shell with same diameter and thickness is that transform is not moderate.
本文主要介绍了单缸柴油机平衡轴两端圆柱轴径的一种多刀组合加工方法。
The paper mainly introduces a kind of multi-tool built-up processing method for balanced shaft diameter of single cylinder engine.
剖分式轴承座的上盖和底座可分手，首要承受径乡向载荷，合适于圆柱孔和圆锥孔的调心滚子轴承和调心球轴承。
Split Plummer block, whose cap and base can be separated, mainly bear radial load. It fits for self-aligning spherical roller bearings or self-aligning spherical ball bearing.
讨论通过变径蜗杆来实现延伸渐开线圆柱蜗杆的点啮合的方法。
The way of point engagement for extending involute cylinder worm being accomplished by the varying diametral worms is discussed in this paper.
互相啮合的直齿圆柱齿轮，必须具有相同的径节。
计算结果表明，几何非线性使薄壁圆柱壳产生硬化，其非线性频率升高，并同时讨论了线性、非线性频率与节径数及初始位移之间的关系。
Results show that nonlinear frequencies increase with effect of large geometric deformation taken Relationships among linear frequencies, nonlinear frequencies and initial displacements are discussed.
计算结果表明，几何非线性使薄壁圆柱壳产生硬化，其非线性频率升高，并同时讨论了线性、非线性频率与节径数及初始位移之间的关系。
Results show that nonlinear frequencies increase with effect of large geometric deformation taken Relationships among linear frequencies, nonlinear frequencies and initial displacements are discussed.
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