n.鍍鐵(鋼化作用)

I have an inquiry here for1000 ton of special alloy steel which I hope you can supply. 我這里有個(gè)詢價(jià)，求購(gòu)1000噸特殊合金鋼，希望你方能供貨。

An instrument used in surveying, consisting of100 linked pieces of iron or steel and measuring66 feet(20.1 meters). 測(cè)鏈測(cè)量用的一種工具，包含有100個(gè)相連的鋼鐵環(huán)，長(zhǎng)66英尺(20。1米)