常見例句雙語例句Putty for exterior wall needs good properties of water - proof, alkali -proof and good cohesiveness to basis and to coating.外墻膩子要求有較好的耐水、耐堿性及與基層和涂層的良好粘結性。If suitable anticorrosive substances are adopted such as alkali proof concrete, steel and PVC cement and effective measures taken, they will prevent the building from alkali corrosion.合理采用防腐蝕材料,如耐堿砼、鋼材、聚氯乙烯膠泥等,采取有效的防護措施和防腐蝕構造,防止建筑物被堿腐蝕。To improve the quality of Ta Spinnerets with high hardness and alkali-proof corrosion, HFCVD is used to deposit crystalline diamond films with different sizes of grain on carbonized Ta spinnerets.為改善鉭噴絲頭的品質,提高其硬度和耐堿腐蝕能力,利用熱絲CVD制備不同粒徑的金剛石薄膜,并通過對鉭襯底的碳化處理,成功使之沉積于純鉭噴絲頭表面,對純鉭噴絲頭進行表面強化。 返回 alkali proof