When male and female (M&F) or tongue and groove (T&G) type flanges are specified, the nozzle flange facing of the vessel shall be of female or groove type.
如指定使用外螺纹及内螺纹或榫面及槽面法兰，容器设备口法兰端面应为凹槽型。
Zhang X. M. , C. H. Shi, J. G. Wu, G. L. Bao, S. H. Ye, T. Katsura, The relationship between essential amino acid contents of hybridized combinations and their parents.
张小明、石春海、吴建国、鲍根良、叶胜海和富田桂，杂交稻米必需氨基酸含量与亲本的关系。
Zhang X. M. , C. H. Shi, J. G. Wu, G. L. Bao, S. H. Ye, T. Katsura, The relationship between essential amino acid contents of hybridized combinations and their parents.
张小明、石春海、吴建国、鲍根良、叶胜海和富田桂，杂交稻米必需氨基酸含量与亲本的关系。
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