The bed surface rotating device is connected with the bed surface.
床面旋转装置连接床面。
Obviously armoring layer existed in the surface of the river bed.
河床表面具有明显的粗化层。
It is well known that bed porosities are greater near the bounding surface.
众所周知，靠近边界表面的床层自由空间率较大。
The upper surface of the bed remains horizontal when the container is tipped.
当容器倾斜时床层上表面保持水平。
The cause of the surface cracks of a bolt bed was analyzed in this paper.
本文分析了飞机前襟翼作动筒连接螺栓底座表面裂纹的形成原因。
It has three elements, namely the sliding surface (with), smooth the bed, slippery body;
它有三个要素，即滑动面（带） 、滑床、滑体；
It has three elements, namely the sliding surface (with), smooth the bed, slippery body;
它有三个要素，即滑动面（带） 、滑床、滑体；
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