End Connections - choice of raised face smooth finish or ring type joint for piping flexibility.

连接端口-根据管道特点选择凸面光滑表面或环连接端口。

It has a solid one-piece PTFE liner that extends over the raised face portion of the flange face to serve as the gasket.

阀体法兰突面上有聚四氟乙烯实体起垫片的作用。

She raised her stricken face and begged for help.

她仰起苦闷的脸，乞求帮助。

At this moment the King raised his head slightly, and Hendon caught a good view of his face.

这时，国王微微抬起头来，亨顿把他的脸看得清清楚楚。

With my last effort, my hand instinctively raised to protect my face.

我用尽最后一点力气，本能地举起手护住自己的脸。