plate_test_coupon_有道手机词典

1.Renewal of qualification may be made for any process by welding a single test coupon of either plate or pipe, and by testing of that coupon as required by QW-301 and QW-302.
如需重新获得资质，则该焊工需要遵照QW - 301和QW - 302的要求，在一个板材附件试片，或一个管材附件试片上，进行焊接试验。
dict.yoduao.com