Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/e544452b9ac48166948386370144e313.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 fulcrum pin例句_fulcrum pin英汉例句_fulcrum pin双解例句_甲百汇小鸡词典
The base member (1) is pivotally connected to the lever member (2) by a pin (5) that provides a leverage fulcrum point. 基板件（1）通过销（5）枢转设置在杠杆件（2）上，该销（5）作为杠杆的支点。 ip.com