The properties and service life of the materials depend on the alloy design and process design.

而材料性能、寿命的好坏取决于其合金设计和工艺设计的优劣。

youdao

This paper shows the construction of hydrodynamic oil seal SR. and discusses its properties and service life through test.

本文介绍“SR”流体动力油封的结构，通过试验更进一步论述“SR”流体动力油封的密封性能和使用寿命。

youdao

The wet winding process for carbon fiber reinforced composites, the properties and service life of the resin matrix are studied.

研究了碳纤维增强复合材料用湿法成型工艺、基体配方的性能和使用期。

youdao

Central Scotland Fire and Rescue Service said properties had been flooded in Dunblane and Callander.

BBC: Scotland

In social housing, for example, we will extend choice-based lettings - which give council and housing association tenants a new service to identify locations and properties, in place of traditional schemes where tenants were simply allocated a property on the basis of a centrally-imposed points system.

BBC: NEWS | UK | Politics | Full text: Blair on public services

Each and every one of our Five-Star properties (both and old and new) meet only the highest service standards.

FORBES: 18 New Forbes Travel Guide Five-Stars To Visit In 2012