选择云台的几个要点，云台的运动是否平滑，云台的安全承重量，是否配置快装板。
The key points to remember when selecting a head are how smoothly it moves, how much weight it can safely support and whether it has a quick release plate.
补液泵的结构振动会影响补液的平滑性，本文对一台日本KM—30型补液泵进行了结构的随机振动谱分析。
The structure vibration of make-up pump has influence on the flow smoothness of fluid. The spectral analysis of random vibration for a Japanese make-up pump model KM-30 has been carried out.
非常小心地限制移动工作台的运动，使其在干净、平滑、水平固定的表面上运动。
Use extreme care and restrict the movement of portable Banks to localize movement on clean, smooth, level stationary surfaces.
用水清洁工作台之后再铺板岩材料，这样可以避免刮伤平滑的板岩。
Then, clean the work table with water. And then, put SLATE material, so no scratches will be given to the smooth SLATE.
用水清洁工作台之后再铺板岩材料，这样可以避免刮伤平滑的板岩。
Then, clean the work table with water. And then, put SLATE material, so no scratches will be given to the smooth SLATE.
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