Hardened seating surfaces? Both disc and body seating surfaces are hard faced for maximum service life.

硬化的阀座表面？阀瓣和阀体地阀座表面都经过表面硬化，最大限度延长使用寿命。

youdao

Hardened seating surfaces - both disc and body seating surfaces are hard faced for maximum service life.

硬化的阀座表面—阀瓣和阀体地阀座表面都经过表面硬化，最大限度延长使用寿命。

youdao

Hardened seating surfaces - both disc and body seating surfaces are hard faced for maximum service life.

硬面阀座表面使得阀门在很高的压差应用环境中具有更长的使用寿命。

youdao

Granting combatant status also would guarantee that beneficiaries of military service members killed in the attack can receive the maximum life insurance benefit, according to Carter's office.

CNN: Purple Hearts proposed for Fort Hood victims