Prepare2% sodium hydroxide immediately prior to use by adding0.4 g of pellets of Item4 into10 mL of Item5. QS to20 mL and mix.是什么意思_Prepare2% sodium hydroxide immediately prior to use by adding0.4 g of pellets of Item4 into10 mL of Item5. QS to20 mL and mix.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句