旋塞 cock 手动阀 hand-operated valve; manually operated valve 异径四通(两个分支口为异径) reducing cross (reducing on both outlet) ..
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... manually-operated circuit 人工操作电路... manually operated valve 手动操纵阀 manually operated switch 手扳道岔,手动开关...
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a manually operated valve 手动操作阀
hand- manually operated valve 手动阀
DIRECTIONAL MANUALLY OPERATED VALVE 峰昌手动换向阀
manually operated down valve 手动下降阀
manually operated control valve 手动控制阀
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