... 排种量调节杆 seedratelever 排种量调节套 cut-off block ; shutoffblock ; off block 一种色彩量测系统 colorspectrummeter ...
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The enemy officer was struck dumb when he heard that the route of retreat had been cut off(block out).
敌军军官听说后路已经被切断，吓得目瞪口呆。
The bottom of the disc is made of knife-shaped gate with a cut off function of the medium. When gate is closed, oblique plane of gate valve encounters wedge block of gate to achieve sealing effect.
闸板底部做成刀形斜面具有切断介质功能，而且闸板关闭时通过阀体上的锲块紧靠闸板斜切面使得闸板紧紧贴靠阀座密封面，从而起到了密封效果。
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