Ashing should be avoided.避免采用灰化消解.Wet ashing and flame atomic absorption determination of Ca, Mg and Fe have been studied.本文研究了湿法灰化火焰原子吸收法测定多种加工食品中的钙 、 镁和铁.We have the capabilities of preparing samples from ashing to wet...
窗户都关紧了，百叶窗都拉下了，门也闩上了。The windows were closed and shuttered, the door was barred.睡觉时不要将所有的窗户都关紧.Do not fasten all the windows up while you sleep.窗子关紧了 吗 ?Is the window fast?...