失效

Finally, if the reformulated qucries can not return a valid result set, the mappings used in reformulating queries arc proved to be invalid.

最后，根据重写后的查询能否返回合法实例，就可以判定查询重写所使用的映射是否失效。

For the first time the Tikhonov s regularizing method is used to solve the failure rate of the products of electrical engineering when their failure distribution is unknown.

当电工产品的失效分布类型未知时，首次利用求解不适定问题的正则化方法来求解其失效率。

This will get the expensive rehashing out of the way and let you store iterators, safe in the knowledge that they won't be invalidated.

这样可以养活不必要的代价昂贵的重散列，让你可以保存迭代器，并确知它们不会失效。

Since no automatic rehashing is done, iterators are never invalidated when inserting or erasing elements.

由于没有自动的重散列，所以在插入和删除元素时不会令迭代器失效。

The experimental results denoted that the finer pearlite along the austenite boundaries in the as-cast Cr30Ni20NRE steel disappeared first under long-term and high-temperature service condition, and that an umber of Cr- richened carbides were formed due to unila-teral carburizing at long-term and high- temperature, consequently causing Ni to concentrate, bulging and calalyzing decomposition of the carburizing gas.

试验结果表明，长期在高温条件下服役，铸态Cr30Ni20NRE耐热钢中沿奥氏体晶界的珠光首先融入奥氏体，长期高温单边渗碳形成大量富铬碳化物，促使镍富集并起泡形成瘤状物，催化含碳气体的分解；表层瘤状物使辐射管表层疏松，表面积扩张，加快了碳向基体的渗入，提供了碳化物持续长大的条件，并引起沿碳化物周边开裂和奥氏体基体严重萎缩；合金元素的重新分布造成主合金元素铬和镍产生两极分化，镍和硅的富集促使石墨化，与侵入的氧形成内部氧化空洞和膨胀疏松，最终导致构件穿孔失效。

Chrono Rifted units can now be selected by control group number after warping back in.

被超时空裂隙暂时卷跑的部队，恢复之后之前的编队号码不再失效

At last, the failure strength riles of matrix, particle and interface were obtained respectively.

最后分别提出基体、颗粒和界面的失效强度准则。

A software for calculating the critical load of scuffing has been compiled and numerical solutions have been obtained.

作者编制了表面胶合失效临界载荷的计算软件，并进行了数值计算。

ABSTRACT The scuffing mechanism of sliding lubricated line contacts has been analyzed theoretically and studied experimantally in this paper.

本文从理论分析与实验验证两方面研究了线接触金属摩擦副的表面胶合失效机理。

Among the factors which have influence on scuffing failure,surface roughness and slidingspeed are very important.

在影响表面胶合失效的诸多因素中，表面粗糙度和相对滑动速度都非常重要，因此，利用改装的MHK500型环。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。