shut off 

英汉解释

切断；关掉

同义词

v. block off，close off

参考例句

1. Shut off head equals 125% of head of normal flow.
泵的关闭压头为正常流量时压头的125%。
2. The computers immediately shut off the rocket engines.
于是，计算机立即关闭了火箭发动机。
3. To clean or replace parts; shut off supply, loosen lock-nut and back off adjusting screw.
如果要清洗或更换部件，关闭供应管道，松开锁紧螺母，退出调节螺丝。

英英解释

v.
  1. stem the flow of
  2. isolate or separate
  3. block off the passage through

网络释义

shut off
切断，使隔绝，脱离; 关掉（煤气等）; 关上，停止，切断; 断路;
shut-off block
开关组; 释义：关闭部件; 关断组;
selective shut-off
选择性封堵;
formation shut-off
地层封堵;
SO shut-off
停机、遮断;