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Terms for subject Environment containing | all forms
ChineseEnglish
decibel A unit used to express relative difference on power, usually between acoustic or electric signals, equal to ten times the common logarithm of the ratio of the two level (用来比较在声音信号之间或者电子信号之间相对能量差的单位,等于两者比值取其常用对数的十倍。)
shellfish
类养殖shellfish farming Raising of shellfish in inland waters, estuaries or coastal waters, for commercial purposes. All commercial shellfish beds producing bivalve molluscs must be monitored for microbial contamination. Samples of water and shellfish flesh must be tested for the presence of algal toxins. Periodic monitoring of fish and shellfish must be carried out to check for the presence of contaminants (为了商业用途在内陆水域、河口或沿海水域养殖贝类。所有生产双壳类软体动物的商业使用的贝类床必须监控微生物污染。水和贝类肉的样本必须做藻毒素量的测试。必须定期监测鱼和贝类以检查污染。)
类毒素, 瘫痪的paralytic shellfish poisoning
类毒素, 腹泻的diarrhetic shellfish poisoning