vt.<正>弄脏,玷污,污辱;
例句:
Study of reducing compound material's drilling smirch
减少复合材料钻孔污斑的研究
The compound material of resin matrix may produce serious smirch phenomenon during the minute hole drilling.
以树脂为基体的复合材料在微孔加工中会产生严重污斑现象。