return contact的用法和樣例：
例句
- The model featuring the rotatable pressure contact makes alignment of the pressure switches an easy task in application.
可旋轉壓力接點型壓力開關在應用中調節非常方便。 - The switching reliability and long service life are guaranteed by either a silver plated or optional gold plated contact.
鍍銀的或鍍金的接點保證了開關的可靠性和使用壽命。
