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"The pump casing shall be constructed of close-grained cast iron, aSTM a48, Class 30, and shall be of sufficient thickness to withstand all operating pressures and mechanical stresses."

泵壳结构应该采用符合美国材料试验协会aSTM a48级别30致密铸铁制造，应该具备足够的厚度，能够承受所有运行压力和机械应力。

In this paper, a sufficient and necessary condition such that the Ricci form of continuous loop group s is closed is given.

本文给出了连续环群的Ricci形式是闭的充分必要条件。

A sufficient condition for quadratic stability of fuzzy closed loop system is given in terms of linear matrix inequalities.

但是对于实际中广泛存在的非线性离散系统的保成本控制问题还没有得到充分的研究。

Usually a screwdriver or length of bent clothes hanger is sufficient to check and clear any blockages found.

通常一个螺丝长度或弯曲衣架足以制止和清理淤塞发现。

The accord that applied the REEBOK running shoes of DMX technology to had gotten authority originally reputably, but resemble in those days China because experienced Huo Du of male sufficient bishop teachs part-time country because Ao Bing beats the state and abstruse team instead finishs class cloudily same, DMX applies in the effect on basketball shoe not beautiful brings about people to generate overall doubt to its function.

应用了DMX技术的REEBOK跑鞋本来已经得到了大家的一致好评，但就像当年中国男足主教练霍顿因为兼任执教国奥队反倒因为国奥兵败而黯然下课一样，DMX应用在篮球鞋上效果不佳导致人们对其性能产生全盘迷惑。

Acid production of lactic acid bacteria is sufficient to coagulate milk proteins.

乳酸细菌产生的酸足以使乳蛋白质凝固。

We give some examples of BiFrobenius algebras based on the extensions of algebras and coalgebras . Let H be a bialgebra of finite dimension . Then T= H⊕H* has an algebra structure and a coalgebra structure also . We discuss the properties of T , and get the necessary and sufficient condition for T to be a BiFrobenius algebra .

然后根据代数余代数的平凡扩张给出一类BiFrobenius代数的例子，设H是有限维双代数， T= H⊕H*既有代数结构也有余代数结构，研究T的性质，给出了T成为BiFrobenius代数的充要条件，即定理3.9。

Schauengurg[2] considered more general case and found necessary and sufficient conditions for the cosmash product coalgebra H Q to be a Hopf algebra with a Hopf subalgebra H and a weak projection !

Schauenburg在文献[2]中把Radford的研究加以推广，给出了使余smash积HQ为Hopf代数，H为HQ的子Hopf代数，且具有弱投射π：HQ→H(即π是左模余代数同态，且π|_H=id_H)的等价条件。

When the precipitate is not yet coarsened as shorter in rupture life, the precipitation hardening effect may be intensified by the increasing of precipitate, so that the high temperature strength may be raised by the increase of W content, while the precipitate may coarsen markedly and the precipitation hardening effect may reduce on heating for sufficient long time.

在持久寿命较短时，析出相来不及粗化，析出量的增加造成了析出强化效果的加强，即钨量的增加提高了高温强度；而当长时间加热后，析出相发生了明显的粗化，降低了析出强化效果。

After 56 days,growth rates of cobia fed the VO diets were low and probably reflective of a lack of sufficient essential fatty acids.

由于对高能饲料的要求和水产养殖业的全面发展，世界鱼油产品被大量地使用在鱼类饲料中[1]。

I can do simple painting, carpentry and plumbing.

我能做简单的油漆、木工和修水管等工作。

The motivations, notations and outline of this work are also given in this chapter.

从这个意义上讲，这些时滞是无害的。然后用实例说明这三个定理的应用和互不包含性。