常見(jiàn)例句A zinc series phosphating solution was developed by using unpoisonous and free from pollution acceleration HAS for NaNO2. 研究了磷化液中各組分及工藝條件對(duì)磷化膜性能的影響,并分析了鋅系磷化的原理。Study and Use of High Purity,High Strength,Unpoisonous,Rapid Hardening Basic Repair Mix 高純高強(qiáng)無(wú)毒快硬堿性修補(bǔ)料的研究與應(yīng)用 返回 unpoisonous