常見例句雙語例句When using bulk supply of NF3, such as a Y cylinder or a tube trailer, the pigtail-to-valve connection should also be ventilated.當(dāng)需要大量供應(yīng)NF3時，如Y鋼瓶或管道拖車，還應(yīng)該對豬尾管到閥門接頭通風(fēng)。 返回 pigtail connection