你一定也有這種朋友
Sheet metal - Wikipedia, the free encyclopedia 然後他們每次都考很高分! 真是有夠討厭!!!!Use of Gauge to designate sheet metal thickness is discouraged by numerous international standards organizations. For Example, ASTM states in specification ASTM A480-10a "The use of gage number is discouraged as being an archaic term of limited usefulness...
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