压下

As compared with the pressure of carrier gas, the subatmospheric pressure is more favourable condition to atomize the hydride, so the atomization temperature was lower (about 650℃).

由於硒化氢的原子化是在负压下完成的，它将比常压或载气压力下更有利於氢化物的原子化，因而使硒化氢原子化的最佳温度降低。

According to the similarity criterion, an experimental model was designed which is one-third of 3500mm heavy and medium plate mill pressure screw-pairs in sizes. Electrometric method was adopted to get the load distribution of the thread layers by measuring the bending deformation of the screw teeth.

依据相似准则，制作3500mm中厚板轧机电动压下传动螺纹副1/3的测试模型，采用电测法获取悬臂螺牙弯曲应变值，模拟实际轧制力和过平衡力作用下螺纹副螺牙各层载荷大小及分布。

The lift then began to fall faster and faster until someone hit the emergency stop button.

随后电梯开始向下坠，越来越快，直到有人压下紧急制动按纽。

The precursive Fe3O4 films were sulfurized using constant current electrodepositing and oxidation treating, and Fe3O4 films was transformed into FeS2 thin films after heat sulfur annealing of 400℃ at different sulfurizing pressures.

采用恒流电沉积及氧化处理制备Fe3O4先驱体薄膜，再通过400℃下的热硫化退火，使Fe3O4先驱体薄膜在不同硫压下转变成为多晶FeS2薄膜。

By combination of the finite differential technique with the upper bound elemental technique, simulation for the technology of extrusion directly following liquid infiltration which involves infiltration, solidification, and large plastic deformation in one process has been realized and the essences of various technical processes have been revealed by their corresponding simulation results showing the variation of the infiltrated depth and the temperature field with time during infiltration, the punch position, the solidification development of the matrix alloy, the state of the composite within the deforming zone, and the forming load required at different times during extrusion.

采用有限差分法和上限元法相结合，对融浸渗、凝固和大塑性变形为一体的液态浸渗后直接挤压工艺过程进行了数值模拟，从浸渗时浸渗深度与坯料温度场随时间的变化以及挤压过程不同时刻的冲头压下位置、坯料凝固情况、变形区坯料状态、成形载荷大小等方面揭示了不同工艺条件下的各种挤压过程的实质。

It was demonstrated that dynamic recrystallization followed by metadynamic recrystallization can occur in the final passes and then austenite grain is further refined under the reasonable rolling schedule.

结果表明，在合理的温度和压下条件下，应变累积可导致在精轧过程出现动态+亚动态再结晶行为，促进奥氏体晶粒的进一步细化。

In the paper, the present state of ultra-fine-grained materials, severe plastic deformation and Asymmetrical-ARB are introduced in detail; the craft to fabricate ultra-fine-grained copper using Asymmetrical -ARB is studied fully; the problem of combination of interface is settled; the affect of homogenizing annealing、 annealing and rolling method on mechanical properties of materials prepared by Asymmetrical-ARB is discussed and analyzed when control parameters of rolling mill such as the press—ratio、 the asynchronous rate、 rolling—speed are fixed, and a kind of craft that meets to requirement of experiment is made out.

本文对超细晶、大塑性变形技术、异步轧制目前国内外研究进行了详细的介绍；对异步叠轧方法制备超细晶铜工艺做了较为细致的研究：解决界面复合问题；在压下率、异步比、轧制速度等轧机控制参数固定条件下，探讨了均匀化退火工艺、去应力退火工艺和轧制方式对异步叠轧材料力学性能的影响，并进行了分析，制定出符合实验要求的轧制工艺。

So, if a car dealer is coming up on the end of the month and he's a few cars short of that next spiff, he or she usually has an incentive to get the sales manager to knock down the price in order to hit that quota.

所以，如果一位汽车销售商临近月末距离下一档奖金还差几辆车没卖出去，那么他/她一般会用一个鼓励政策来让销售经理压下价格从而完成这个指标。

Intelligence power: the driver steps down the accelerator pedal to intelligence power switch and continue to step it down with bigger force when the vehicle needs accelerating and overpassing other vehicles, the accelerator pedal will press down the intelligence switch when the accelerator exceeds the normal full accelerated position; now the engine will emit higher power than rated power in a short time, so the vehicle will get a stronger acceleration.

智能动力：当车辆需要加速超车时，司机踩下油门踏板至智能动力开关，并继续以较大的力往下踩时，油门超越正常的全油门位置，将智能开关压下，此时发动机会短时地发出比标定功率更高的功率，车辆因而获得更加强劲的加速性。

Measured the basic physical parameters of unsaturated soils in Three Gorges Reservoir area; 2 measured the initial sample matric suction using the unsaturated triaxial testing system, which can be used to evaluate the unsaturated soil strength and stress; 3 the drying and moisture absorption experiments were executed using the Tempe apparatus, and got the Soil-Water Characteristic Curve, permeability coefficients of every stress level were simulated according to the parameters from the SWCC; 4 the unsaturated soil strength tests were carried out using the GDS triaxial testing system, then got the Mohr circle and shear strength parameters; the results from different stress paths were compared; meanwhile, the axial strain-stress ratio-volume strain curve of different matric suction and different radial pressure was got, as well as their relationship; The research, which provided the necessary data and reference for Three Gorges Reservoir area geologic disaster, is the basic component of Three Gorges Reservoir geologic disaster prevention and research, and experimental results will be used directly in the project.

1量测了三峡库区非饱和土的基本物性参数； 2用非饱和土三轴试验仪量测了试样的初始基质吸力，为评估非饱和土的强度和应力水平提供参考； 3用Tempe仪和体积压力板仪进行了非饱和土的干燥和吸湿试验，得到了土-水特征曲线，并根据其参数拟合出各级吸力状态下对应的渗透系数； 4用GDS三轴仪进行了强度试验，得到了Mohr圆和抗剪强度参数；并比较分析了不同应力路径下试验结果；同时得到不同吸力和不同围压下轴向应变-应力比-体应变的关系曲线和其相互关系。该研究是三峡库区地质灾害防治研究工作的基础性工作，其结果将直接应用到工程实际中，为三峡库区地质灾害提供必要的数据和参考。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。