smirch
英
美
v. 弄脏; 污蔑; 诋毁
n. 污点; 污斑; 性格缺点
过去式：smirched现在分词：smirching第三人称单数：smirches过去分词：smirched
双语例句
- 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。 - Study of reducing compound material's drilling smirch
减少复合材料钻孔污斑的研究