密封的测试插头用在高水压测试管，管路和压力容器上。
I. D. sealing test plug for high pressure hydrostatic testing of pipe, pipelines and pressure vessels.
尝试直接拔出插头，测试表明在该位置时接头不能通过机械方式分开。
By attempting to simply pull the connectors apart, test that the connection in this position can no longer be mechanically separated.
在电缆连接器插头或测试夹具上可能会出现危险致死电压。
Lethal voltage may be present on cable connector jacks or test fixtures.
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