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According to the clinical feature of HAP in non-surgically treated elderly inpatients with lung cancer, the prevention of HAP should be a fundamental measure, and treatment should be given in time once the infection occurs.

根据老年肺癌非手术治疗院内获得性肺炎的临床特点把HAP的预防作为根本措施，一旦出现感染应及时治疗。

Otherwise, if an error occurs, it will exit with a non-zero value.

否则，如果一个错误发生，它将会带一个非零值。

If this occurs, set the Randomness value to a small non-zero value.

如果要这样做，将随机值设置到非零的最小值。

Activity decreases because some loss always occurs due to inactivation or nonideal interactions with chromatographic materials or other molecules in the solution.

活性减少是因为失活，或色析材料/溶液中的其它分子间不理想的相互作用。

It is found that the phase transition from the ferromagnetic ε-Fe to the nonmagnetic ε-Fe occurs at 72.9 GPa.

磁性对六角结构铁的影响较大，影响的压力范围从0 GPa到72.9 GPa。

London forces are a type of intermolecular force that occurs between all molecules whether polar or nonpolar.

色散力是发生在所有分子间的作用力，无论分子是极性的，还是非极性的。

Under the conditions that the external coupling matricesare n×n irreducible symmetric real matrices with zero row sums and nonpositive off-diagonal elements, asymptotic synchronization occurs if the coupling strength exceedsa critical value.

第三章主要讨论非恒同的单摆振子系统，讨论了外部耦合格式矩阵是n×n阶实对称不可约，行和为零且对角线以外的元素非正的矩阵时系统的解的渐近同步性。

In comparison of the two integral cross sections, it can be found that that the nonreactive process occurs more easily in lower collision energy.

通过反应性碰撞和非反应性碰撞积分截面的比较，发现在低能碰撞情况，非反应性碰撞更容易进行。

HIV is not transmitted by casual contact or even by the close nonsexual contact that occurs at work, school, or home.

在工作场所、学校或家里的平常接触甚或密切的非性接触都不会传播HIV。

While, for a higher polymer concentration, due to its high viscosity, the infiltration rate of nonsolvent is reduced and the phase separation occurs by the mechanism of nucleation-and-growth of polymer-poor phase.

然而高浓度之高分子溶液，因黏度高，故而减缓非溶剂渗入之速率，导致相分离机制系以高分子贫相成核成长之方式进行。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。