例句與造句

1. Chemical analysis of zinc ores concentrates . accurate determination of zinc by complexometric titrimetry after complete precipitation of interfering elements
   鋅礦石精礦的化學(xué)分析.雜質(zhì)完全沉淀后用絡(luò)合滴定法進(jìn)行鋅的精確測定
2. It's difficult to find interfering element in a sentence. 用interfering element造句挺難的