Warning: file_put_contents(/www/wwwroot/ppbbbu/n94.cn/cache/fb2ee44c0cfc21b5c4f1af3bedd8fcc8.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 upset rivet例句_upset rivet英汉例句_upset rivet双解例句_94生活常识网有道词典
When an aluminum rivet is upset against a softer material, a washer must be used under the upset head to prevent eruption of the softer material. 当一个铝铆钉的镦头形成在较软的材料一边时,必需在铆钉镦头下使用垫片以防止较软材料胀裂。