officially recognized standard
常見例句
- Where a primary reference standard is not available from an officially recognized source, an in-house primary standard should be established.
從官方認(rèn)可的貨源處無法得到基本參考標(biāo)準(zhǔn)品時(shí)，應(yīng)該制備一個(gè)“內(nèi)部基本標(biāo)準(zhǔn)品”。
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