In the last several stages diaphragms of steam turbine LP casing, there are two typical diaphragm gland configurations-low diameter seals and opposite-teeth labyrinth.

在汽轮机低压末几级隔板中，有两种比较典型的汽封结构形式——低直径汽封和对齿迷宫式汽封。

youdao

Cementing fills and seals the annulus between the well casing and the drilled hole.

FORBES: The Fracking Solution Is A Good Cement Job