Before entering all employees have to remove their rings, bracelets and watches and put them in special mini-lock boxes.
在进入之前，所有的雇员必须蜕掉他们的耳环、手链和手表，并把他们放进特制的迷你锁盒里面。
2
Threaded seat rings for valves in services with high velocity turbulent flow or thermal cycling should be lock welded to the body to avoid loosening. Please specify.
Threaded seat rings should be lock welded to the body when used in high velocity (turbulent) or thermal cycling services to avoid loosening. Please specify.