The standard deviation of lethal dose is an important acute toxicity parameter of a chemical substance as LD50 and can be measured by the slope of the dose/lethal curve.是什么意思_The standard deviation of lethal dose is an important acute toxicity parameter of a chemical substance as LD50 and can be measured by the slope of the dose/lethal curve.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句