1 . introduction for the pre - stressed concrete bridges in offshore and cold area , due to the corrosion effect of the corrosive agents in the environment to the structures , the safety of the bridge structures will decline with the service time , and this will affect the normal use of the bridge structures in the residual service time 第一章绪论处于沿海地区及冬季寒冷地区的预应力混凝土桥梁，由于所处环境或冬季所采用的除冰盐中氯离子的腐蚀作刚，导致结构安全性的降低，使结构不能保证其在后续使用期内的正常使用，造成较大的经济损失。
Whereas dealerships service management experience is out of date , no transparent service charge , unreasonable allocation of staff wages and salaries and the workshop resources , time control management system is a project that can take every repair item as a unit , to calculate the service time accurately 现代项目管理已成为一种系统的管理理论和技术。我们应用项目管理的理论和技术为奥迪特许经销商开发“维修工时管理系统” 。一汽大众为经销商提供包括技术,软件,管理模式的支持。
The time of carbonization from surface of concrete structure to surface of steel bar in concrete structure was taken as a durable limit . random characteristic of the limit was analyzed , based on which reliability index of carbonization in different servicing time was calculated and many relevant factors were discussed in two examples 根据co _ 2扩散及钢筋锈蚀的机理，把碳化至钢筋表面的时间作为混凝土结构的耐久极限，通过计算其分布特性，分析了钢筋混凝土结构在不同服役期的碳化可靠指标以及影响钢筋混凝土结构碳化可靠性的因素。
Specific paying a means is : agree of service period , press service period divide into equal parts to give capital specified number , the service time that already performed with the worker is degressive pay ; did not agree of service period , by labor contract period divide into equal parts gives capital specified number , the contract deadline that already fulfilled with the worker is degressive pay ; agree the same term without the agreement , by 5 years service period divide into equal parts gives capital specified number , the service time that already performed with the worker is degressive pay ; both sides already had an agreement to degressive computation means , agree from its 具体支付方法是：约定服务期的，按服务期等分出资金额，以职工已履行的服务期限递减支付；没约定服务期的，按劳动合同期等分出资金额，以职工已履行的合同期限递减支付；没有约定合同期的，按5年服务期等分出资金额，以职工已履行的服务期限递减支付；双方对递减计算方式已有约定的，从其约定。
If try out expires , it is inside contract period , servantchoose a person for a job the unit can ask laborer pays this to groom charge , specific paying a means is : agree of service period , press service period to wait for a contributive amount , the service time that already performed with the worker is degressive pay ; agree the same term without the agreement , by 5 years the share such as service period gives capital specified number , the service time that already performed with the worker is degressive pay ; both sides already had an agreement to degressive computation means , agree from its 假如试用期满，在合同期内，则用人单位可以要求劳动者支付该项培训费用，具体支付方法是：约定服务期的，按服务期等份出资金额，以职工已履行的服务期限递减支付；没有约定合同期的，按5年服务期等份出资金额，以职工已履行的服务期限递减支付；双方对递减计算方式已有约定的，从其约定。
