反转

Furthermore,the model system can be used to generate a larger refractive index with zero absorption.

这个系统可以展示从较高激发态到基态的无粒子数反转激光增益，也可以用来实现粒子数反转激光，同时这个系统还可以产生无吸收的较大折射率。

Hockney surmises, however, that this convex mirror could be turned around and used as a concave projection mirror: If you were to reverse the silvering , and then turn it round, this would be all the optical equipment you would need for the meticulous and natural-looking detail in the picture.

但霍克尼的猜测是，把这个凸面镜前后反转过来，便能当成可投射的凹面镜来用：「如果你把银涂在凸面镜的反面，并将它反转过来，就变成能做出精细自然画面的道具了。

Flip Horizontal.

选择一块我们需要的部分，进行复制-粘贴，并将复制的部分进行反转（编辑-变换路径-水平反转）。

The polarization switching has been studied as a function of applied electric field and temperature by using KA model.

应用铁电薄膜极化反转的KA模型，讨论了极化反转电流随电场和温度的变化关系。

Fifthly,we take Hasbrouck model to discuss the form mechanism of momentum and contrarian anomalies in Shanghai and Shenzhen A-share stock markets from the aspect of information spread pattern and find that private information held by informed investors is an important factor thatcauses the anomalies.

采用Hasbrouck模型从信息传播模式角度探讨了沪深A股市场惯性与反转效应异象的形成机理，发现沪深A股市场中知情交易者掌握的私有信息分别是导致两市股票价格惯性和反转效应异象的重要因素。

The result is: out of 187 cases of azoospermia, 77(41.18%)patients with abnormal chromosome(number and structural aberration); heteromorphic chromosome(Y chromosome polymorphisms and pericentric inversion of 9) and 46,XX sex reversal. Out of 30 cases of severe oligospermia, 4 patients with abnormal chromosome(structural aberration and 46,XX sex reversal).

发现187例无精症患者中检出异常核型77例（41.18%）（其中46，XY，t(6；14)(p21；p13)，46，XY，t(8；12)(p21；q24)为世界首报核型），主要涉及染色体异常；染色体异态（Y染色体异态和9号染色体臂间倒位）及46，XX性反转；30例严重少精症患者中检出异常核型4例（13.33%）（结构异常和46，XX性反转）。

If the inverting input is made slightly more positive, the output will become more negative, this is why the name "inverting" is given to this input.

11 ，如果反转的投入是稍微更积极的，输出将变得更加消极的，这就是为什么命名为"反转"是给这个投入。

On the base of roundly analyzing and studying phase relation of stator magnetometive force and rotor one of brushless DC motor,the main purpose of this paper is to analyze thoroughly positive and negative rotation logic layout of sensorless BLDCM,and explains the differences between BLDCM and sensorless BLDCM.

依据无刷直流电动机定转子磁势的相位关系，深入分析无位置传感器无刷直流电动机正反转控制的逻辑编排，并分析了无位置传感器和有位置传感器正、反转控制的不同。

In othor way, we use RT-PCR to observe the secretion of mRNA to compare with the balance of TH1/TH2 in spleen, so that we can see if we treat with cystamine can apparently raise the ratio of TH1 and also raise mRNA of CD25/ Foxp3, but reduce mRNA of CD40L. As a result of kidney which is the important secondary immunity organ discusses cystamin whether is the important control action or not to regulate in kidney then to be able to improve illness.

另外，透过了反转录聚合链锁反应(reverse transcription-polymerase chain reaction， RT-PCR)观察spleen中CD8/CD4 maker的mRNA表现量比较TH1/TH2 balance的倾向，发现经过胱胺处理后的确TH1相关的CD8 maker的mRNA比例量有大幅度上升，间接证明SLE倾向於TH2有被反转，而在Treg的特异性 maker方面CD25/ Foxp3之mRNA之比例也有大量上升，T cell的活性化maker CD40L也减少了mRNA的表现量，同时证实了SLE免疫倾向的反转，及发炎情况的减少及Treg cell的大量诱发。

It is shown that the phase inversion is complete, which means that all water molecules in the system are transformed to be continuous phase at the phase inversion point. The viscosity of the system before the phase inversion point is almost constant independent on stress, which is the characteristics of Newtonian fluid.The systems after the phase inversion point exhibit high viscoelasticity and strong pseudoplasticity at relatively high stress.

结果表明，乳化剂浓度较高时，体系发生完全相反转；体系在相反转点前为W／O结构，其粘度几乎不随剪切应力的改变而改变，表现为牛顿流体行为；体系在相反转点后为O／W结构，具有很高的粘弹性，并且在较高剪切应力下表现为典型的假塑性。

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。