词汇	maintenance manipulation
释义	maintenance manipulation 养路工作
随便看	chemically property chemically pumped laser chemically pumped molecular laser chemically pumped molecule laser chemically pure chemically-pure chemically pure, C.P chemically pure reagent chemically pure reagentCP chemically pure water chemically purification chemically raw material chemically reacting system with delays chemically reaction chemically-reactive dyes chemically reactive state chemically reactivity chemically reactor chemically reagent chemically reduced printed chicuit chemically reduced printed circuit chemically refinery chemically refining chemically refining process chemically-resistant glass