Traditional method for overhaul of the top of miter gate is through manual operation by hydraulic hoisting jack which has the shortcomings of low efficiency and great risk.
摘要船闸人字门顶门检修的传统方法是采用液压千斤顶手动作业，工作效率低，时间长，技术风险大。
2
Manual switch is foreseen at the exit gate according to Chinese code.
规范 在出口大门处安装手动开关。
3
Method, threads that wait on the event handle proceed immediately without blocking. A manual reset event ACTS like the gate of a corral.