非装订式A2图幅的图框线距图幅边的尺寸是多少? How long is the frame line to the boundary ?Su

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非装订式A2图幅的图框线距图幅边的尺寸是多少? How long is the frame line to the boundary ?Suppose A2 drawing sheet is non-binding.

A.10

B.20

C.15

D.25

非装订式A2图幅的图框线距图幅边的尺寸是多少? How long is the frame line to the boundary ?Su

热搜:a2图纸大小是a4图纸的两倍