Motion and speed are sensed without mechanical couplings, bearings, linkages or an external power source.
运动和速度感到无机械轴承，联系或外部电源。
Most subsea pipeline repair technologies involve fittings that can be connected to the pipeline via mechanical means, such as couplings, clamps, T-branch connections, or by welding.
多数海底管线修复技术都会涉及到一些借助机械手段或者焊接联接管线的配件，例如联轴器、钳夹、T型分支连接等。
Flange gaskets are not interchangeable with other mechanical pipe couplings or flange gaskets.
法兰垫圈与其它机械管道连接器或法兰垫圈互换。
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