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桨叶上C区位于桨叶表面0.7R以外的部分,其内的缺陷通常允许()修理,但其工艺应符合规定。

发布日期:2021-03-22

桨叶上C区位于桨叶表面0.7R以外的部分,其内的缺陷通常允许()修理,但其工艺应符合规定。
A

有机胶黏剂

B

无机胶黏剂

C

金属扣

D

焊补

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