同时存在

This result can best be viewed as a quantum black hole version of the third law of thermodynamics. As a result of this area spectrum, the spectrum of M is discrete, bounded below, and can be made positive. Prom the physical point of view, the semiboundedness and positivity of the spectrum are very satisfying results: The semi-boundedness of the spectrum implies that one cannot extract an infinite amount of energy from the system, whereas the positivity of the spectrum is in agreement with the well-known positive-energy theorems of general relativity.

同时根据EMDA黑洞动力学，存在与面积谱对应的大于零且有下界的质量离散谱，从物理上来看，质量谱的半有界性意味着不可能从系统吸取无限的能量，而正定性则与广义相对论中的正能定理一致，也就说稳态轴对称EMDA时空的ADM能量总是大于零。

The outstanding functions of this multi-fucntional wheelchair is that the hight of the seat could be adjusted at will. So that it may stretch users' operating space and make up users' physical handicap.It could alleviate the workload of paramedics as well. It is more advanced than previous products.This wheelchair could be driven by hand or electricity. Thus, the shortage of physical force of old and handicapped people could be solved. At the same time, users could still operate this wheelchair when batteries run out. Such design eliminate worries of users on a long-distance trip.In addition, a super big storage box on tail of wheelchair brings great convenience to users. backrest can be adjusted multi-anglely. Adjusted feet board increases cosiness. A small table of this wheelchair really brings extraordinary convenience when users want to read, write or do other activities.

本设计的多功能轮椅最突出的一个功能就是座位的高度可以根据使用者的需求随意进行调节，这样就可以大大扩展使用者的操作空间，补充了使用者在身体上的缺陷，也可以减轻照顾人员的工作负担，比起以前的产品有了较明显的改进；其他功能还有轮椅的手动电动两种驱动方式，这样可以解决老年人和残疾人在体力上存在的问题，同时在外出时遇上没电的情况也不至于显得无能无力，消除了使使用者在长途奔波时的顾虑；此外位于轮椅尾部的超大储物筐，给使用者携带物品带来了极大的方便，靠背的多角度调节，脚踏板的高度调节大大增加了使用者的使用舒适度，轮椅上小桌的设计给使用者读书，写字，进行其他活动带来了极大的方便。

When the frequency or the amplitude of the vibration is high, the final segregation efficiency is still low, but the segregation is unstable. An optimum operating point with a moderate frequency and a moderate amplitude of the vibration exists in the process of segregation in Brazil nut problem.

当振动频率或振动幅度较小时，颗粒整体分离效果都较差，但分离的稳定性较好，当振动频率或振动幅度较大时，整体分离效果仍然较差，同时分离的稳定性也较差，振动分离过程中存在一个频率和振幅适中的最优操作点。

The traditional BLDCM mathematical model establishment in the electric motor two-phase breakover foundations, in fact the neutral point is hanging, inevitable existence three-phase breakover at the same time.

传统的直流无刷电机数学模型建立在电动机两两导通的基础上，而实际上由于电动机中性点悬空，不可避免存在三相同时导通的情况。

This research culminated in the de Broglie hypothesis stating that any moving particle or object had an associated wave.

存在相位波是物体的能量和动量同时满足量子条件和相对论关系的必然结果。

E.g.: the game account rob, the electronics bank customs station ream burglarize to take, when you work on the internet the information is stolen, divulged, revised, forged.

这些方便人们的同时也存在这巨大的隐患，游戏帐号被盗、电子银行卡口令被窃取、网上办公时信息被窃听、泄密、篡改和伪造。

The behavior time budget of Great Bustard is different between male and female during the breeding season, at the same, it changes following the breeding stages.

大鸨繁殖期的各种行为时间预算存在着性别间的差别，同时随着繁殖阶段的不同而变化。

And the proton transfer behavior in the mixture of the acetone and the butanone is also observed.

质谱结果表明，离子和中性分子之间存在分子离子反应，同时在丙酮和丁酮的混合物中有质子转移。

When pH is 10, adsorption time is 30 min, dosage of bone char is 0.6 g/L, the original concentration of As in drinking water is 0.5 mg/L, As removal can reach 95.2%. The adsorption behavior is fitted both with Langmuir and Freundlich isotherm. The adsorption mechanism is supposed to be Ca—OH functional groups combined with anion. And there may occur the co-precipitation between calcium hydrogen arsenate and hydroxylapatite in the aqueous solution, and ions also exchange. The saturation adsorption capacity of As reaches 4.688 mg/g. Indexes of effluent are in good agreement with the WHO stringent drinking water standards (0.01 mg/L).

研究结果表明：在pH=10，吸附时间为30 min和骨炭加入量为0.6 g/L，饮用水砷初始质量浓度为0.5 mg/L时其砷去除率可达95.2%；骨炭吸附砷的行为同时符合Langmuir和Freundlich等温吸附模型；其吸附机理可能是Ca—OH官能团结合HASO4阴离子，并产生砷酸氢钙和羟基磷灰石的共沉淀，另外还存在离子交换作用；吸附柱的饱和吸附容量为4.688 mg/g；出水砷浓度符合世界卫生组织规定饮水砷标准(0.01 mg/L)。

Some improvements are performed on the capacitive coupling probe to increase its frequency range. In this case, it could measure the D. C. volts and RF volts respectively.

针对原有容性探针存在的问题，增宽了新研制的容性探针的频响范围，改进后的容性探针能同时测量直流电位和射频电位。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。