smut

There is smut on the windows.

窗户上有烟尘。

smut one's hands with coal

双手被煤弄脏

all those black smuts from the engine.

所有从机车里散落出煤灰。

This method resolved the problem of poor yield of DNA from smut teliospore thick wall, and efficiently avoided the false negative result of PCR.

此法解决了腥黑穗菌厚壁冬孢子核酸样品制备效率低难题,有效地避免了PCR检测假阴性反应。