查询词典 environment variable

The dimmer control circuit comprises: three-end bidirectional controllable silicon switch element, comprising grid and turned on by trigger signal of the grid, connecting to AC power supply through lamp load; and a first variable resistor, possessing adjustable resistance and regulating lamp brightness by following modes: changing resistance value of the first variable resistor, changing phase of the trigger signal corresponding to AC voltage waveform, prolonging or shortening turning-on time bucket of three-end bidirectional controllable silicon switch element, thereby changing current provided to the lamp load.

一种调光器及调光控制电路，该调光控制电路包括：三端双向可控硅开关元件，其通过灯负载连接到交流电源，其中，三端双向可控硅开关元件具有栅极，并且由输入到所述栅极的触发信号开启；以及第一可变电阻器，其具有可调节的电阻值，其中，通过以下方式来调节灯负载的亮度：改变第一可变电阻器的电阻值，改变所述触发信号相对于交流电压波形的相位，延长或缩短所述三端双向可控硅开关元件的开启时间段，从而改变了提供给所述灯负载的电流。

In this article,the writer in combination with the character of variable velocity variable frequency analyzed the principles of transmission system and the request of adjusting velocity in filament yarn twisting machine .

文章分析了弹力丝机传动系统和调速要求，结合变频调速技术的特点，选用艾默生变频器实现调速，简化了传动结构。

An analysis on the investment and energy consumption of the water supply modes by roof water tank and variable velocity variable frequency pump was emphasized with an engineering example.

通过工程实例，重点分析了屋顶水箱给水方式和变频泵给水方式下给水系统的投资和能耗情况，论证了屋顶水箱给水和变频泵给水相结合是高层住宅小区最佳的给水方式。

At last, the imitation experiments of wind turbine operation characteristics were performed, The experiments were done under two typical conditions of variable wind speed and variable machine velocity.

对风速变化及机组转速变化两种典型运行条件下的风力机运行特性进行了模拟实验，模拟结果与理论数据达到了高度的吻合。

We try to introduce the concept of compositive variable and fittness of land-use and to define the spatial value of land, and in order to find the compositive variable for each grid zone by which the land-use for each grid zone can be specified. We apply the the second family theory of multivariate analysis.

本文导入合成变量与适地度的概念来定义土地的空间价值，以多变量解析中之数量化理论第II类来求出每一方格分区的合成变量，以做为判定各方格小分区内可做为何种土地使用的依据。

Rotary piston pump is a new structure of water pumps, running a very reasonable job, using the principle of variable volume compression job, a direct-driven rotary manner, as opposed to centrifugal pumps have a series of outstanding performance advantages, rotary piston pump with the complexity of the structure of the centrifugal pump, as with the shell and the rotor blades of the rotor and casing of the rotary continuous variable volume zone, the formation of continuous expansion and compression, pumping and pumping implementation functions.

旋转活塞水泵是一种新型结构的水泵，工作运行状态十分合理，采用变容积压缩原理工作，直接旋转方式驱动，相对于离心式水泵有一系列突出的性能优势，旋转活塞泵结构的复杂程度与离心泵一样，由外壳和带叶片的转子组成，转子与外壳形成连续的旋转变容积区，形成连续的扩张和压缩，实现抽水和扬水的功能。

This paper develops a RF analog predistorter by utilizing the gate-voltage controlled variable resistance characteristic of FET when it biased in a variable resistance zone. The predistorter also offers certain gain while linearizes the amplifier.

本文利用场效应管偏置于可变电阻区时的栅压控制变阻特性构成模拟射频预失真器，在对放大器线性化的同时还可提供一定的增益。

This manner of variable-length decoding allows cost-efficient implementations, in particular when various types of variable-length codes need to be decoded.

这种可变长度解码的方式提供了可变长度解码的高效益实现，特别是在需要对各种类型的可变长度码解码时。

Based on the developed variable polarity TIG welding power supply ,it establishes variable polarity TIG welding arc multi-information measuring and processing system by adopting memory oscilloscope,high speed video-recorder?spectrograph?welding arc dynamic analyzer and computer.

以研制的变极性TIG 焊接电源为实验平台，采用记忆示波器、高速摄像仪、光谱分析仪、焊接电弧动态分析仪，建立起变极性TIG焊接电弧多信息测试分析系统，同时采集焊接电流、电弧电压、电弧形态和电弧光谱等重要信息，并基于VisualC++语言开发的软件系统对采集的各种信息进行融合及分析。

Any change in the variable triggers the watchpoint, presenting you with the code immediately below the line that changed the variable.

这些变量的变化都会触发观察点，立即把你引导到改变变量的下一行代码。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样