Stem and packing chamber walls. Close roundness, straightness and superior 8–16 RMS or burnished surface finish.
阀杆和填料腔壁。精确的圆度和平直度，高级8-16RMS或镜面表面光洁度。
The effects on straightness measurement are analyzed for the cube-corner retroreflector with angle errors, surface errors, yaw, pitch and roll.
分析了角锥棱镜的制造角差、面形误差和测量过程中角锥棱镜的偏摆、俯仰、滚转对直线度测量的影响。
The formula of straightness error of the machined surface was also founded through geometrical analysis.
通过几何分析，建立了加工表面的直线度公式。
To measure the straightness, erect the workpiece on the measuring block placed on the surface plate.
测量直线度时，将工件竖放在放置于平板上的测量块上。
To measure the straightness, erect the workpiece on the measuring block placed on the surface plate.
测量直线度时，将工件竖放在放置于平板上的测量块上。
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