persistence The capacity of a substance to remain chemically stable. This is an important factor in estimating the environmental effects of substances discharged into the environment. Certain toxic substances (e.g., cyanides) have a low persistence, whereas other less immediately toxic substances (e.g., many organochlorines) have a high persistence and may therefore produce more serious effects [pə'sɪstəns] adj.

environ.

持久性 (物质的一种能力，保持化学稳定性。这种物质是影响环境评估的一个重要因素。某些有毒物质(如氰化物)有较弱的持久性，而其它不是立即有毒的物质(如很多有机氯)有很强的持久性，并可能因此产生更严重的影响。)

persistence

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persistence
manag.	持久
met.	抗力
perf.	滞留度
pest.contr.	持3/4眯裕中
pest.contr. од.	持久性; 持续性
space	持久; 余辉; 暂留


regular reflection
earth.sc.	单向反射
met.	正反射; 有规则反射
mil., air.def.	规则反射
oil	单向反射
plast.	正常反射
rem.sens.	镜面反射; 闪光斑点
space	规则反射


of
gen.	的; …的; 关于 …的; …做成的; 对…; … 的