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。
2
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。
3
Owing to the special structure and properties, tert-leucine is an important intermediate in pharmaceutical production and a chiral auxiliary for asymmetric synthesis.