不平均的

Because of the high sand, high water content, high salinity, high temperature steam heavy oil exploitation, mining and strong polymer injection corrosion media environment factors, piston pump wells pump an average of more and more short-cycle, and some do not even to the required 30 days on the pump seized, severely affected by oil field development.

由于高含砂、高含水、高矿化度、高温蒸气稠油开采、注聚合物开采及强腐蚀的介质环境等因素影响，柱塞泵井平均检泵周期越来越短，有的甚至不到30天就需要检泵，严重影响油田开发。

There are several ways toobtain the DBHF self-energy from the G matrix used before, such as a simple method,where the Dirac structure of the nucleon self-energy is obtained from the momentumdependence of the single-particle energy, and a projection method.

在不同的不对称系数条件下，我们计算出的各密度处的核子平均结合能满足经验的抛物线规律，给出了密度依赖的不对称能。

A country in which the average income is so low that people simply do not have a disposable income.

一个国家，其中平均收入是如此之低的人根本不具有可支配收入。

5 The average population density of the world is 47 persons per square mile.

第一句&世界人口的平均密度为每平方英里47人&不是主题句，因为8 Tt t 8。

Indicated by clinical follow-up of 30 months, there are no evidences of spinal instability and spinal canal stenosis.

临床随访平均2年6个月，临床效果良好，无脊柱不稳和椎管狭窄的症状、体征和影像学依据。

If Frank does miss the pocket it is either dead on the headpin or left of the headpin, because he missed his target several boards left, Frank Carries a 192 average, which would be even higher if he could consistently pick up a 10 pin spare.

Frank 只有在球偏离目标区好几块板时才会打到1号瓶正中央或左边而造成失误，他的平均分数为192，如果不是常漏10号瓶，分数可能会更高。

And finally, the downwash flow at hovering condition caused an increase of total infrared radiation between 3~5 μm by about 35%.

最终，使得在模拟悬停状态下，考虑和不考虑旋翼下洗气流相比，3~5μm的平均红外辐射强度大约增加35%。

The calculated isotropic polarizability, polarizability anisotropy invariant and hyperpolarizability are 305.4, 188.3, and 1155.4 a.u., respectively.

计算的各向同性极化率、极化率各向异性不变量和平均超极化率分别是305.4、188.3、

On condition that the critical temperature and critical density or critical specific volume are known, the density of saturated liquid can be calculated with high accuracy.

利用该方法在已知临界温度和临界比容或临界密度的条件下，可以对所有乙烷系氟里昂的饱和液体密度进行推算，该方法推算的平均偏差不超过1%，最大偏差不超过1.5%，可满足CFCs替代物研究和应用的需要。

Wherein X represents a hydrocarbon group or hiydrocylhy-drocarbon group having 1 to 14 carbon atoms, a represents an integer of 1 to 6,b represents an integer of 1 to 5,R's represent a hydrogen atom,a halogen atom,a hydrocarbon group having 1 to 8 carbon atoms or an aryl,group independently from each other,and n represents an average number which is 1 to 10 and4,4'dihydroxybiphenyl,and having a softening point of not higher than 120℃,and not lower than 60℃.

其中x是一个油气组或hiydrocylhy-油气群有1至14个碳原子， a代表整数1到6，B代表整数1到5，R的是氢原子，卤素原子，烃类组有1至8个碳原子或一个芳，77独立于对方，而n是一个平均这个数字是1至10条和第4，4'dihydroxybiphenyl，并有软化点不高于120℃，不得低于60℃。

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％。