恒压

To determine whether α1 and α2-adrenoceptors are located postsynaptically on renal vascular smooth muscle, a new method was developed as the following: the right renal vascular beds in the pithed rats were perfused with blood drawn from carotid artery at constant rate by a pump.

本实验用颈动脉血恒速满流毁脑脊髓大鼠单侧肾脏的方法，观察了高度选择性α_1受体阻断剂哌唑嗪和α_2受体阻断剂育亨宾与去甲肾上腺素、肾上腺素及电刺激肾交感神经对肾血管平滑肌的相互作用。哌唑嗪明显抑制电刺激引起肾灌流压升高，但尚存留一小部分既不能被增加哌唑嗪的剂量所阻断也不能被育亨宾所阻断。

In the development of institutions, the company set up under the Chinese Room, physical and chemical analysis room, drug analysis room, intelligence research, such as research departments; in experimental instrumentation, the company has advanced equipment at home and abroad, such as high-performance liquid chromatography, gas chromatography spectrometer, UV spectrophotometer, tableting machines, biochemical incubator, constant temperature and humidity, and drug dissolution device, Rotary Evaporator, vacuum drying, optical rotation detector, such as large-scale apparatus.

在开发机构方面，公司下设中药室、理化分析室、药物分析室、情报研究室等研究部门；在实验检测仪器方面，公司拥有国内外先进的仪器，如高效液相色谱仪、气相色谱仪、紫外分光光度计、压片机、生化培养箱、恒温恒湿器、药物溶出仪、旋转蒸发仪、真空干燥箱、旋光测定仪等大型仪器。

, when the eccentricity is equal to zero, the arc centre of pad and the centre of axle journal are coincident, and the thickness of oil film is constantly C.

当偏心率为0时，如图5所示，瓦块圆弧中心与轴颈中心重合，油膜厚度恒为半径间隙，根据流体润滑理论，无动压效应，压力为0，瓦块摆角为零。

With the small test sample to simulate the local stress conditions of the coupler knuckles,the fatigue tests are carried out according to the load spectrums of pulling and pressing programs of the freight car coupler s and their simplified spectrums.

用小试样模拟钩舌局部区域应力状态，分别按货车车钩拉、压程序载荷谱和该谱的简化谱进行疲劳试验，所得的疲劳寿命值与现场车钩运用调查统计值均相符合；同时，对 AAR所推荐的恒幅载荷也进行了试样的疲劳试

This paper introduces two driving manner of pull down of filter press filter board-fluid pressure motor driving and constant torque reducer.

介绍压滤机滤板拉机的两种驱动方式———液压马达驱动和恒力矩减速机；叙述了各自的工作原理。

Our factory is specialized in plastic extrusion molding machines and auxiliary equipment (PP stationery line pressure machine, touch-screen machine-cut, high-speed Hengqie machines, electric Taiwan, the back -, Bronzing machine, inside Flap machine, Organ kit molding machine, winding machines) and other design and manufacture of plastics machinery business.

我厂是一家专业从事塑胶（PP、PE、PS、PET、EVA、ABS）押出成型机及辅助设备（PP文具压线机、触摸屏型裁切机、高速恒切机、电热台、书背机、烫金机、内页折边机、风琴资料袋成型机、收卷机）等多种塑胶机械的设计制造企业。

Dongguan Jian Qiao Equipment Co., Ltd was established for many years, located in Guangdong Province Tangxia Tangxia Town, Dongguan City Industrial Zone on the 30th the first company has been engaged in the electronic testing equipment, environmental test equipment sales services and the development of automatic test system, the main product has : testing machine, furniture testing machine, swing machine, optical quality control testing instruments, wire tester, wear-resistant machine, constant temperature and humidity machine, optical image measuring instrument, wire testing machine, office chair repeated impact test machine, a desk drawer repeated testing machine, office chair backrest repeated testing machine, office chairs rotary life testing machine, officelife test machine, plug line hoist swing test, MIT-style folding strength testing machine, tensile testing machine, micro-computers, paper tube compression testing machine, aging test machine, testing machine decolorization extent, resistant to rubbing tester, testing machine embrittlement, sudden pull test machine, testing machine, such as bonding strength.

东莞市剑乔仪器设备有限公司创建多年，位于广东省东莞市塘厦镇塘厦第一工业区30号公司一直从事电子测试仪器、环境试验设备的销售服务和自动测试系统的开发，主要产品有：试验机，家具试验机，摇摆试验机，光学品管检测仪器，线材测试仪，耐磨机，恒温恒湿机，光学影像测量仪，线材试验机，办公椅反复冲击试验机，办公桌抽屉反复试验机，办公椅反复靠背试验机，，办公椅旋转寿命试验机，办公椅脚寿命试验机，插头线吊重摆动试验，MIT式耐折强度试验机，微电脑拉力试验机，纸管抗压试验机，老化试验机，脱色程度试验机，耐揉试验机，脆化试验机，突拉试验机，胶合强度试验机等。

By analyzing the collapsing velocity,the bed collapse process can be clearly divided into two stages:a rapid initial sedimentation stage with constant velocity,and a decelerating stage of solids consolidation for the incompletely supended agglomerates.

实验证明，这种颗粒的床层塌落行为明显不同于普通的GeldartA类与C类颗粒，其塌落过程可分为恒速沉降阶段和减速压实阶段。

At present, Hengjin has produced more than 600 sets of high vacuum agglomerating furnace, high pressure air quenching furnace, high vacuum brazing furnace, high vacuum annealing furnace, vacuum annealing equipment, vacuum nitriding equipment, vacuum crystallizer, vacuum fast quenching equipment, vacuum melting equipment, vacuum storing equipment, vacuum operation box, vacuum dryer, etc.

恒进真空已先后研制了高真空正压烧结炉；高真空高压气淬炉；高、低温真空钎焊炉；真空退火炉；真空速凝铸带炉；真空回火炉；真空晶化炉；真空破碎炉；真空储藏柜；真空操作箱；真空干燥器；真空保鲜室和真空镀膜机等真空设备，客户遍布全国二十多个省市，并远销到韩国、泰国、越南、朝鲜、伊朗等国家。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。