Warning: file_put_contents(): Only 0 of 4887 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/62383.com/index.php on line 55 upset rivet例句_upset rivet英汉例句_upset rivet双解例句_流逝汉英词典
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. 儅一個鋁鉚釘的鐓頭形成在較軟的材料一邊時，必需在鉚釘鐓頭下使用墊片以防止較軟材料脹裂。