1、Two-high mill is a kind of major equipment for merchant bar production.
二輥軋機(jī)是中小型軋鋼生產(chǎn)中一種主要的軋制設(shè)備。

2、Major equipment and critical utilities and systems, however, require IQ, OQ and PQ.
對主要的設(shè)備、關(guān)鍵的公用設(shè)施和系統(tǒng)，還需要開展IQ、OQ和PQ。

3、Electric furnace is major equipment of zinc powder reduction smelting.
電爐是鋅粉工藝進(jìn)行還原熔煉的承載設(shè)備。

major equipment翻譯