失效

Based on different destruction situation of cyclone lining in residue catalytic cracking unit,from the fields of operation factor,heat sock stability of lining,and construction of local lining,the failure reasons are analyzed.

根据重油催化裂化装置旋风分离器衬里的不同损坏情况，从操作因素、衬里的热震稳定性、局部衬里的施工等方面分析失效原因。

Especially in soft rock the problem is more serious.

在非均匀载荷作用下套管易挤毁失效，特别是在软岩层段中该问题尤其突出。

It is very much significant against applies solderer's skill to the wearproof girdle failure problem of settlement drilling rig to choose the rightful wearproof stuff .

选择合理的耐磨材料和敷焊工艺对解决钻具耐磨带失效新问题非常重要。

Create the main reason of wearproof brining failure of drilling rig to possess layer abrasivity 、The drill pipe operational mode under the shaft 、Wearproof stuff selection together with effect applying solderer's skill .

造成钻具耐磨带失效的主要原因有地层研磨性、钻杆的井下工况、耐磨材料选择和敷焊工艺的影响。

However, experimental and service results show that there are spallation phenomena much earlier than expectation of time.

然而试验或使用结果表明，热障涂层过早剥落失效现象仍存在。

The government should find the springhead of overload:correcting the market failure based on disaccord of private cost and social cost in freight market.

政府治超也应从源头入手：即纠正货运市场私人成本与社会成本偏离下的"市场失效"。

The maximum staleness policy criterion specifies the length of time after content expiration that the cached copy of the resource can be used.

最大失效期策略条件指定在内容到期后，可以使用资源的缓存副本的时间长度。

Collect index statistics with the DBMS_STATS package or ANALYZE statement to keep track of the staleness of guesses, so Oracle does not use them unnecessarily.

用户可以使用 DBMS_STATS 包或 ANALYZE 语句收集索引统计信息，并刷新失效的物理猜测信息，Oracle 不会自动地执行此类操作。

Keywords cold extruding punch;smelting steel; steeliness hard alloy;forging;compound hardening treatment;failure analysis

冷挤压凸模；熔炼钢；钢结硬质合金；锻造；复合强化处理；失效分析

As a result of characteristic of function of material of steeliness bearing oneself, the main form of bearing invalidation is exhaustion flakes, fatigue life limits of short, application gets very big limitation.

由于钢制轴承自身材料性能特点，轴承失效的主要形式是疲劳剥落、疲劳寿命短、应用范围受到很大限制。而陶瓷材料si3。。。。。。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。