single ram preventer ; single ram type BOP ; 油气 single ram type perventer
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双语例句
1
文中讨论了影响选型的诸多因素,如闸室平面尺寸、输水阀门工作条件、单级或多级船闸的影响等。
Besides, many affecting factors, such as lock chamber dimensions, lock valve conditions and single or multi flight lock situations have been discussed.