英语语法分析

Stellite 6 seating faces for long service life.

钨铬钴合金6阀座面，使用寿命更长。

Stellite hardness is not affected by heat treatment.

钨铬钴合金的硬度不会受到热处理的影响。

To extend the life of the valve flap can be coated with stellite.

为了延长使用寿命，阀瓣可以涂上一层钨铬钴合金。