security rating

China should learn from American experience to establish and improve the security rating system, to strengthen information disclosure system of listed companies and to improve the integrity of the mechanism.

监管层面应该借鉴美国经验，建立健全证券评级制度、强化上市公司信息披露制度和完善上市公司诚信机制。

The vanadium redox flow battery ( VRB) developed in recent years is a kind of new rechargeable battery. It is with excellent advantages, such as low cost, high security, simply technological process and power rating and energy rating being independent.

全钒氧化还原液流电池（钒电池）是日益受重视的一种新型储能电池，因其成本低、安全性高、工艺相对简单以及功率和能量相互独立等诸多特点，近来发展迅速。

The works are reasonable life span of 50 years, two security rating.

该工程合理使用年限为50年, 安全等级二级.

Therefore the technical security rating is 72% dangerous.

因此，该技术的安全评级是72%危险的。