sulphide stains meaning in English

硫化物污染〔罐头腐蚀的一种形式

Ammoniun sulphide staining of the uterus
子宫硫化胺染色
Test methods for analysis of lead in pvc taken from insulation and sheath of electric and optical fibre cables - method a : total lead content determination with flame excitation atomic absorption spectrometry - method b : qualitative analysis of lead by lead sulphide staining
聚氯乙烯绝缘和护套光电纤维电缆铅分析的试验方法.方法a :用火焰激发原子吸收光谱测定法测定法含铅总量测定.方法b :硫化铅斑渍中铅的定性分析