To check lamp dimensions, particularly the combination of cap length and bulb shoulder shape, for contact-making in a lampholder.
检验灯与灯座接触的有关尺寸，尤其是灯头长度和玻壳肩部形状的组合尺寸。
Check the dimensions of dug pipe channel, especially the grade level, inclination against design requirements, check to see whether the bedding is rammed hard enough.
检测开挖的管槽尺寸，特别是水平高程、斜度是否满足设计要求，垫层是否夯实。
We can use them to check and confirm the final dimensions. Of course some modifications are still needed.
笔盖，笔管，笔管后盖，可以用来确认尺寸（小部分还会要修正）。
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