Discussing several ordinary processing technologies of valve seat ring and valve stem guide hole of cylinder head now.
对目前气缸盖气门座圈和导管孔的几种一般加工工艺进行讨论。
Two rows of seat in the house of Commons behind the front bench where ordinary member of parliament sit.
下院中前排座后面的两排座位，普通议员在此就座。
Two rows of seat in the house of Commons, behind the front bench, where ordinary member of parliament sit.
下院中前排座后面的两排座位，普通议员在此就座。
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