The excellent wear-resisting properties of composite auxiliary spring with wear-resisting structure were proved by experiments.
实验证明具有防磨结构的复合材料副簧两端耐磨性能良好。
A basic dyeing auxiliary with good properties and appropriate price was developed so as to overcome the shortcomings associated with basic dyeing with disperse dyes.
开发性能好、价格合适的碱性染色助剂，以解决分散染料碱性法中的不足之处。
Owing to the special structure and properties, tert-leucine is an important intermediate in pharmaceutical production and a chiral auxiliary for asymmetric synthesis.
由于叔丁基的特殊结构和性质，叔亮氨酸是重要的医药中间体和不对称合成的手性诱导模板。
应用推荐