Coupling the acoustic emission probe with the specimen is the key link in the measurement of preexisting stress of the rock specimen by Kaiser effect.
以凯瑟效应测量岩石试样先存应力，声发射探头与试样的耦合是其重要环节。
Quick change coupling nut and link set of Jane can quickly reset and change.
快换连接螺母和链接套简可以快速的复位和改变。
Coupling is a coupling of locomotive and car parts, commonly used have a link bolt and rotary chain, large car adopts automatic coupling with both buffer action.
联接器是联接机车和矿车的部件，常用的有插销链环和回转链，大型矿车采用兼具缓冲器作用的自动车钩。
Coupling is a coupling of locomotive and car parts, commonly used have a link bolt and rotary chain, large car adopts automatic coupling with both buffer action.
联接器是联接机车和矿车的部件，常用的有插销链环和回转链，大型矿车采用兼具缓冲器作用的自动车钩。
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