It provides a reasonably and completely theoretical basis for combination of rods, centralizer, assembling site and number of depart device.
为抽油杆柱组合、扶正器、防脱器安放位置及数量设计提供了更加合理、完善的理论依据。
It is recommended that you clean your hands before assembling the cup. Make sure that prior to assembly all parts are completely dry.
倡议妈妈在拆卸水杯前必定要把手清洗洁净。而且确保全部的配件都曾经完整的晾干。
It is recommended that you clean your hands before assembling the cup. Make sure that prior to assembly all parts are completely dry.
倡议妈妈在拆卸水杯前必定要把手清洗洁净。而且确保全部的配件都曾经完整的晾干。
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