绕绳子的转盘关在灯下面的一只小铁盒里，钥匙由点灯工人保管，绳子在一定的高度内有一根金属管子保护着。
The pulley over which this rope ran was fastened underneath the lantern in a little iron box, the key to which was kept by the lamp-lighter, and the rope itself was protected by a metal case.
热均衡挤压粉末通常封装在金属容器内有时也装在玻璃容器内。
Hot Isostatic Pressing Powders are usually encapsulated in a metallic container but sometimes in glass.
阐述了返厂解体检查的情况，内部未发现损伤，但灭弧室和瓷套内有微量金属粉末，部分有灼痕。
There was no damage found inside, but there was a little of metal powder in the arc chamber and porcelain bushing and some of the powder has been burned.
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