to prep.对于；为了；(表示方向)到；向；(表示间接关系)给adv.（表示方向）去；（门）关上
双语例句
The freezing-thawing resistance is an index of durability of sand-fixation agent under subzero temperature. 抗冻性反映固沙剂在低温环境下固沙的耐久性能。
The conclusion shows the method fits and the mineral admixture can reduce the pore porosity of concrete and improve the compactibility and freezing resistance of concrete. 结论对于混凝土冬季施工更合适未用自然变低温养护的方法，掺入适量的掺合料能使混凝土孔隙率显著降低，使混凝土更加密实，提高混凝土的抗冻性。
