Warning: file_put_contents(/www/wwwroot/ppbbbu/202081.com/cache/63917eaa140f180461648400840bb659.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/202081.com/index.php on line 55 anti-freezing mixture例句_anti-freezing mixture英汉例句_anti-freezing mixture双解例句_2020年的事情英文词典
This paper concluded and analyzed the depiction that concerned concrete frost mechanism for many years, and studied the anti-freezing mixture action. 本文综合并分析了多年来关于混凝土受冻机理的叙述，并对防冻外加剂作用进行研究。