(反应堆冷却剂系统)压力边界 (reactor coolant system) pressure boundary
反应性压力系数 pressure coefficient of reactivity
什么是液体的静压力?液体静压力有哪两个特性?
液体的静压力特性是:静压力方向和作用面相垂直并指向作用面,静止液体内任以给定点各个方向的液体静压力()
“P”、“T”分别是英文“Pressure”(压力)和“Time”(时间)的缩写,故PT燃油系又可称为压力时间系统,它是靠()的原理来调节喷油量的。
流体静压力的方向与作用面()并指向作用面,流体内部任一点各个方向的静压力()。
压力抑制系统 pressure suppression system
什么是液体静压力?液体某点的静压力如何计算?
压力容器的工作压力包括液体静压力。
什么是液体的静压力?液体的静压力有哪两个特性?
流体静压力的度量压力有绝对压力、相对压力和()。
水压力(hydraulic pressure)
流体压力(fluid pressure)
作用在整个物体面积上的流体静压力,成为流体总静压力。
压缩机启动后在定时器设定时间内,允许润滑油压力低于LO RUN OIL PRESSURE的()
末段终点流量增大时,末段起、终点压力都要减小。相反,终点流量减小时,末段起、终点压力都要增大。When the terminal flow increases, the terminal pressure should be reduced. On the contrary, when the terminal flow decreases, the terminal pressure increases.
作用在整个物体面积上的流体静压力,成为流体总静压力。()此题为判断题(对,错)。
静压强的数学表达式为()(静压力P总压力G流量面积F)。
在最优末段长度的条件下,末段终点的最高压力等于起点的最低压力。It can be seen that: under the condition of the optimal terminal length, the maximum pressure at the terminal point is equal to the minimum pressure at the starting point.
实际气体actual gas: 压力低、温度高、比体积很大的状态时,接近理想气体It approaches ideal gas at low pressure, high temperature and large specific volume.
8、采用扩散硅芯片作为敏感元件的传感器称为扩散硅型压力传感器,以测量压力和速度的气态压阻式传感器的应用最为普遍。 The sensor using diffused silicon chip as sensing element is called diffused silicon pressure sensor, of which the most common application is used for measuring pressure and velocity by gas piezoresistive sensor.
11、螺旋桨位于机头还是机尾,对飞机的航向静稳定性没有影响。 Whether the propeller is located at the nose or the tail has no effect on the directional static stability.
5、本实验是把气压的压力变化通过扩散硅压力传感器转化为电压的变化,微弱的电压信号经差动放大器放大后,用毫伏表观察电压的变化,并进行数据分析处理和人体血压的测量。 In this experiment, the pressure change of air pressure is transformed into the change of voltage through the diffusion silicon pressure sensor. After the weak voltage signal is amplified by the differential amplifier, the change of voltage is observed with a millivoltmeter, which will be used for data processing and blood pressure measurement.
气体的粘度随压力增高而增高。在低压时,气体粘度随温度升高而增加,随着压力的增加,温度升高对粘度增大的影响越来越小,当压力很高时(100×105Pa以上),气体粘度随温度升高而降低,明显表现出类似于液体的性质。Table 1-13 shows the dynamic viscosity of methane at different pressures and temperatures. It can be seen from the table that the viscosity of gas increases with the increase of pressure. At low pressure, the gas viscosity increases with the increase of temperature. With the increase of pressure, the influence of temperature increase on the inc