轮箍位置，符号和开孔程序应该遵守MSS旁路和排泄连接标准SP45。
Boss locations and symbols and tapping procedures are in accordance with MSS By-Pass and Drain Connection Standard SP 45.
本文讨论了孔组定位的两种位置度标准类型。
Two standard types of positional tolerance of group holes were discussed in this paper.
本文讨论了孔组定位的两种位置度标准类型。
Two standard types of positional tolerance of group holes were discussed in this paper.
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