流控制

In the reflow process, this means monitoring the thermal profile of every production board.

在再流工艺控制中，这意味着要对制造的每块板子的热曲线进行监控。

The free-surface boundary conditions are satisfied on the free-moving surface exactly without any approximation or linearization. The governing equations and the boundary conditions on the time-dependent, physical domain are transformed onto a regular domain for numerical computations.

为於未知的自由液面边界上满足非线性边界条件，本模式利用座标转换，将非稳态且不规则物理区间的流场控制方程式与边界条件，映射至规则的计算区间，以进行数值解析。

By practical example, relative boundary layer parameters are computed and analyzed.

它说明离心泵叶片压力面两相流边界层分离点的位置是随叶片形状的改变而移动的，是可以控制的。

MSP430F169 microcontroller was the core components of control and measurement function of an electromagnetic relay characteristic parameter tester. The tester also included DC power module, power amplifier module, constant current source module, keys, and digital tube display module. The tester could test the data of 943-1C-12DS electromagnetic relays including the minimum pull-in voltage, maximum release voltage, relay coil voltage rating when the pull-contact time, release time as well as the contact value of the contact resistance. The system could complete automatic measurement parameters to achieve all the basic requirements of design. And all of the test data was displayed through the 74HC573 digital tube.

摘 要：以MSP430F169单片机作为控制和测量的核心部件，辅以直流稳压电源模块、功率放大电路模块、恒流源模块、按键和数码管显示模块等组成一个电磁式继电器特性参数测试仪，完成对943-1C-12DS电磁式继电器最小吸合电压、最大释放电压、继电器线圈电压为额定值时的触点吸合时间、释放时间以及触点接触电阻值的测试，该系统能够实现成套参数自动测量，所有测试数据通过74HC573数码管进行显示。

The interactions between polymer and each of four kinds of surfactants were studied by means of a controlled-stress rheometer.

采用控制应力流变仪全面研究了阳离子型、阴离子型、非离子型以及两性表面活性剂与部分水解聚丙烯酯胺相互作用。

The deposit occurs in the rhyolite area of Miange Formation within the back_arc spreading basin and is controlled by a shearing belt.

该矿床产于弧后扩张盆地的勉戈组流纹岩中，受韧性剪切带控制。

Initiation of DSP, parameter setting, over voltage and over current protection are finished in the major program; current sample, rotating speed calculating, vector conversion and PWM output are finished in the interruption serving program.

系统软件由控制主程序和PWM中断服务子程序组成：主程序完成DSP的初始化、参数设定、过压、过流保护等功能；PWM中断服务子程序完成电流采样，转速计算，矢量变换和PWM输出等功能。

The calculation of the rotordynamic coefficients of a multistepped annular seal in hydraulic turbines is discussed in this paper. Based on the Hirs' turbulence lubrication theory and the bulk flow model, the governing equations for the flow in the seal are developed by using the Moody's friction equations. The governing equations are perturbed when the rotor and the stator are coaxial. The Runge Kutta integration method and the Newton Raphson iteration method are used to solve the perturbation equations....

本文首先在Hirs紊流润滑理论的基础上，采用体积流动模型及Moody摩擦方程建立起阶梯口环水封中流体流动的控制方程，将各个方程在转子与定子同心处进行摄动，采用Runge－Kuta积分法及迭代过程求解摄动方程，建立起水轮机阶梯式口环水封的转子动力特性系数的计算方法，为水轮发电机组轴系的动力学分析提供了必要的理论基础。

The results showed that the initial rotating time of ball rotor was regulated by the flow of pseudofluids through an orifice of ball rotor so as to make the small caliber fuse attain required safety separation distance.

结果表明，通过球转子腔内准流体的泄流可以控制球转子的转正时间，进而使小口径引信获得预期的延期解除保险距离。

Control of beam halo-chaos by delayed self-controlling feedback.

强流加速器中束晕-混沌的延迟反馈控制。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷