压

The isopiestic molalities and water activities have been determined for the systems Li_2SO_4-H_2O and Li_2B_4O_7-H_2O at 273.15K in the ion strength ranges of 0.6063~ 1.7640 mol · kg~(-1),and 0.1069—0.6478 mol· kg~(-1) respectively and for the systems Li_2SO_4-H_2O, Li_2B_4O_7-H_2O and Li_2SO_4-Li_2B_4O_7-H_2O at 298.15K in the ion strength ranges of 0.3577—5.6378 mol·kg~(-1), 0.1747—2.4497 mol·kg~(-1), 0.2394—5.5399 mol · kg~(-1) respectively by the isopiestic method using an improved equipment.

本论文利用改进的等压设备和实验方法测定了273.15K下纯盐水溶液Li_2SO_4和Li_2B_4O_7离子强度范围分别为0.6063～1.7640mol·kg~(-1，0.1069～0.6478mol·kg~(-1)以及298.15K下纯盐水溶液Li_2SO_4和Li_2B_4O_7离子强度范围分别为0.3577～5.6378mol·kg~(-1，0.1747～2.4497mol·kg~(-1)和Li_2SO_4-Li_2B_4O_7-H_2O体系混合盐水溶液离子强度范围为0.2394～5.5399mol·kg~(-1的等压平衡浓度和水活度。

The results are as follows:① The mean spatial position of the tropical tropopause and the polar tropopause approximately consistent with heating fields of the tropopause, and isopiestic, isotherm present zonality and appear wave motion at the middle and high latitude . The tropopause temperature and pressure are not symmetrical between two hemispheres.② The interannual variations of the tropopause zonal-mean pressure and temperature anomalies are remarkable.

结果表明：①热带对流层顶和极地对流层顶的平均气压场的空间位置和热状况大致吻合，并存在空间波动性，两半球对流层顶的温压场具有显著的非对称性；②对流层顶的纬向气压与温度距平场都具有不同尺度的年际和年代际变化，两极地区对流层顶的温压场最不稳定，两半球中纬度地区的时间演变尺度存在明显差异。

The water activities and osmotic coefficients have been determined at 25 ℃, over the range of concentrations from diluted up to saturated with respect to the solute of NaCl for the synthetic salt lake brine Li Na K Mg Cl SO 4 H 2O systems by isopiestic method using an improved apparatus.

根据我国青海一里坪和东台吉乃尔盐湖晶间卤水Li Na K Mg Cl SO4 H2 O体系的组成制备了两种合成卤水储备溶液，采用等压法和改进的实验装置在 2 5℃下，从稀释到溶液中溶质NaCl达到饱和的浓度范围，对合成卤水溶液进行了等压测定，确定了它们的水活度aH2 O，和渗透系数φ；比较了两种卤水的热力学性质及其变化的规律，揭示了其天然卤水浓度差异的物理化学成因。

Systematic isopiestic measurements have been made at the temperature 298.15K for the quaternary system {water (A1)+methanol (A2)+sodium bromide + ammonium bromide} with the mass ratios of water: methanol=9∶1 and 4∶1 and for the quinary system {water (A1)+methanol (A2)+ethanol (A3)+sodium bromide +ammonium bromide} with the mass ratios of water: methanol: ethanol=18∶1∶1 and 8∶1∶1, which were the first isopiestic determining examples for mixed solvent systems.

本文系统地测定了298.15K时混合溶剂各组元质量比为w〓∶w〓＝9∶1和4∶1的四元系{H〓O+甲醇(A2)+NaBr+NH〓Br}和w〓∶w〓∶w〓＝18∶1∶1和8∶1∶1的五元系{H〓O(A1)+甲醇(A2)+乙醇(A3)+NaBr+NH〓Br}的等压平衡，是混合溶剂体系等压性数据的首例。

In this paper, based on piezoelectric ceramic, composite and experimental mechanics theories, a kind of 1-3 orthogonal anisotropic PCM sensor is developed, and the sensing principle is analyzed to describe sensor behaviors. In order to determine strain and stress on isotropic or orthogonal anisotropic component surface, the relationships between strain and stress are established. The experimental research on 1-3 OAPCM sensor is carried out in uniaxial and biaxial stress states.

本文在压电材料基本理论、复合材料设计方法和实验力学的基础上，构造了一种1-3型正交异性压电复合材料传感元件，探讨了它的传感原理，推导了该种元件的传感方程和用于各向同性材料／正交各向异性材料构件表面测量的应力－应变关系，并在单向和双向应力状态下，进行了实验研究。

Then, using administrative means to put pressure on prices to jacking?

那么，用行政手段来压房价能压下去吗？

Rumjantsev used Hamilton's principle with Lagrange's multipliers to generate the dynamical equations of a rigid-fluid coupled system in 1954 and the dynamical equations and their dynamical boundary conditions of a fluid-elastic coupled system in 1969, where the fluid is incompressible and inviscid. In 1990, Liu used Jourdain's principle with Lagrange's multipliers to generate the dynamical equations of a rigidfluid coupled system, where the fluid is incompressible and viscid.

Rumjantsev利用带Lagrange乘子Hamilton变分原理于1954年建立了刚—流耦合系统的动力方程，于1969年建立了流—弹耦合系统的动力方程及其动力边界条件，其中所考虑的流体是不可压无粘液体；Liu利用带Lagrange乘子Jourdain变分原理于1990年建立了刚—流耦合系统的动力方程，其中所考虑的流体是不可压粘性液体。

Along with the zener diode PN junction temperature change, its regulated voltage value can have the corresponding drifting.

随着稳压管PN结温度的变化，其稳定电压值会发生相应的漂移，从使用上来说其变化值越小稳压性能越好。

ResultsThere are no significant differences of general curative effect and recurrence of anal fistula. There are significant differences of anal deformation, anal resting pressure, anal maximal systolic pressure, postoperation complications (leakage of gas and liquid, key-hole deformation).

结果： 两组各15例病人在总疗效、肛瘘复发等方面没有显著性差异，而在肛门变形、肛管静息压和最大收缩压变化及并发症方面有显著性差异。

General curative effect, anal deformation, anal resting pressure, anal maximal systolic pressure, postoperation complications (leakage of gas and liquid, key-hole deformation) and recurrence of anal fistula were observed in the two groups after operation.

术后对两组病人的总疗效、肛门变形、肛管静息压和最大收缩压变化、并发症、肛瘘复发进行观察比较。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。