water-repellent preservation

According to the characteristics of environmental emergency accidents and our working experiences, we tink that the sampling must be complete, typical and timely in accident monitorings. We also discuss the preservation techniques in water samples and give some examples.

根据环境突发性事故的特点，以作者工作经验，就事故采样的完整、典型、及时性以及样品保存4个方面，结合实例进行论述。

The application of a water soluble chitosan derivative carboxymethyl chitin ( O_6CMCH) in the preservation of Chinese gooseberry and carambola was studied.

研究了水溶性甲壳素衍生物&羧甲基甲壳素（O6CMCH）对猕猴桃和杨桃的保鲜性能。

Thermal Spring Nourishing Cream The research about the protective and decorative functions of water based, waterproof and heat-resistance polyurethane ( PU), which is used in the construction of spraying, forcedly dunking and heat preservation system

温泉水保湿滋润面霜水性聚氨酯防水隔热装饰涂料在聚氨酯喷涂硬泡保温系统的保护装饰利用的研究

Object Management of Water Environment Preservation in Dali

大理市水环境保护目标管理初探

However, the application of oil-water replacement technology is greatly restricted because of the pollution and heat preservation problem of high solidifying point oil along with the underwater oil storage.

水下储油多采用油水置换式方法储油，但随之产生的污染问题及高凝原油保温问题严重制约了油水置换技术的应用。