变化: change; variety; transformat ...降低: reduce; cut down; abate; deb ...品质: character; quality quality降低品质: degradation降低品格: degrade降低品格;堕落: degrade低品质度: low quality低品质费用: copq最低品质的: ropey最低品质水准: lql limiting quality level品质降低: deterioration; falling off in quality低品质度 低质量 下等品: lowquality低品位: inferiority; lean; low assay; low grade; lowgrade降低: reduce; cut down; abate; debase; drop; lower; lessening; reducing; reduction; depression; tarnish 降低定额 derating; cut down the norm for; 降低废品、次品率 reduce the number of rejects and seconds; 降低身份 lower one's social status; 降低生产成本 reduce production costs; cut back production costs; lower production costs; reduction in production costs; 降低物价 reduce [cut] the price; 降低物质消耗 reduce material consumption; 降低消耗 cut down [reduce] the consumption of materials; conservation of energy and raw materials; 降低原料消耗 cut down the consumption of raw materials; economize on raw materials品质: 1.(人的本质) character; quality 道德品质 moral character; 讨人喜欢的品质 endearing qualities; 优良品质 fine qualities; 完整保存其民族之优秀品质 preserve their best national qualities intact; 政治家必备的品质 qualities for a statesman; 我了解他的品质。 i know his worth.2.(物品的质量) quality (of commodities, etc.) 品质一般 of the medium quality; 品质低劣 of the poor quality; 品质号数 quality number; [纺织] spinning number; 品质计 quality meter; 品质检验 quality restriction; 品质鉴定 characterization; 品质鉴定证明书 survey report on quality; 品质名称 [纺织] quality terms; 品质证明书 certificate of quality; 品质指标 index of quality; criterion of control quality; 品质最佳 performance optimal 低品级的: lower grade低品位的: inferior; low grade; low rank; low-grade低品位盖层: heads低品位金属: low-grade metal低品位精矿: low-grade concentrate低品位矿床: low-grade deposit低品位矿石: lean ore; low grade mineral; low grade ore; low-grade mineral; low-grade ore低品位燃料: low grade fuel低品位热源: source of low grade heat低品位铜: low-grade copper