质量

1. quality

♦ ~好 of high quality

♦ ~不高 of low quality; inferior

♦ 提高~ improve the quality

2.物mass

♦ 相对论~ relativistic mass

~比 [物]mass ratio~标准 quality specification~第一 quality first~分级标准 quality classification standard~管理 quality management; quality control~监督 quality supervision~检验 quality inspection~控制 quality control~守恒 [物]conservation of mass~数 [物]mass number; nuclear number; nucleon number~作用定律 [物]law of mass action