Sound card frequency meter source code for on-line collection. when downloading use please respect.
声卡频率计源代码，为网上收集的。下载使用时，请尊重原创作者的版权。
Gharib and Graff set themselves the task of raising a 4.5-meter stone column from horizontal to vertical, using no source of energy except the wind.
加里卜与格拉芙制定了一项任务：仅利用风能，将一个水平放置的4.5米高石柱提至与地面垂直。
For example, meeting growing demand by finding a new source of water or by building a new dam in a place like California could cost up to 60 cents per cubic meter of water.
举例来说，在加利福尼亚州为满足日益增长的需求而寻找新水源或修建新的水坝，每立方米的水价可能要上升到60水美分。
But switch the source to a river or an aquifer, and the cost of a cubic meter of water can plummet to 10 to 20 cents, and farmers often pay far less.
如果从河流或地下取水，每立方米的成本可大幅降至10至20美分，农业用水的成本甚至更低。
Tip: For spark in a backlit portrait or silhouette, try compositions that include the light source. This can drive your meter crazy, though, so bracket your exposures.
小提示：在拍摄背光照明的人像或剪影时，试着将光源纳入构图中，但是这样会导致测光表读数不准，因此可以尝试使用包围曝光法。
In broader terms, the source impedance should be large compared to the feedback impedance of the meter.
广义地说，与仪表的反馈阻抗相比，源阻抗应当比较大。
Current switching applications may require connecting multiple current signals to a single meter, or may require connecting a single source to multiple loads.
在电流切换应用中，可能需要将多个电流信号切换至单台仪表，或者可能需要将一个信号源连接到多个负载。
As shown in Figure 2-18, the external offset current also adds to the source current, and the meter again measures the sum of the two.
如图2 -18所示，外部偏置电流也加到源电流上，仪表显示的也是这二者之和。
For example, if the desired accuracy is 1%, then the meter resistance must be more than 100 times the source resistance.
例如，如果希望的准确度为1%，那么表的输入电阻必须比源的电阻高100倍。
By analyzing each error source of power meter calibration device, the uncertainty of power meter calibration device is analyzed and calculated with mathematical statistics and experimental method.
通过对电能表校验装置的各项误差源的分析，利用数理统计和实验方法对电能表校验装置的不确定度进行分析和计算。
In this paper, a method is introduced to set up an automatic measurement system which is made of constant current source unit, voltage meter, switch matrix and computer with IEEE - 488 interface.
文中给出了一种由配有IEEE- 488接口的恒流源、电压表、开关矩阵和计算机组建自动测量系统的方法。
The meter input resistance should be much higher than the source resistance.
仪表的输入电阻应当远远大于源的内阻才能满足对测量准确度的要求。
Energy meter as an equipment of automatic meter reading system is the main data source and collection objects.
电能表作为自动抄表系统的组成设备之一，是自动抄表系统的主要采集对象和数据来源。
In this research, the portable leaf area meter is designed by combining microcontroller with light source LED and light sensor.
本研究利用微控制器作为控制单元，结合LED光源和传感器设计研制了一种便携式叶面积仪。
Steady laser source and optical power meter are important fundamental equipments in many fiber system measure instruments that need empolder urgently.
稳定光源和光功率计正是诸多急待开发的光纤系统测量仪器中的常用的、重要的基础设备。
In addition, since the source may be near zero Kelvin while the meter is at 300k, there is a very large temperature gradient.
此外，由于源可能处在接近0K的温度之下，而电压表则处在300k的温度之下，这就出现了很大的温度梯度。
They may be installed either upstream or downstream of a regulator or meter, and may be controlled directly or from a remote pressure source by means of an external control line.
它们可安装于减压阀或计量表上下游，并可直接控制或以外接远端压力源控制线做远端控制。
The traditional power meter calibrating system usually has the shortcomings of low efficiency and large volume due to its standard voltage and current source rely on the analog amplifier.
传统的电力校表台由模拟功放向待校电表及标准表提供校表电流，造成系统效率低、体积大、重量重。
Taking the KEITHLEY 6517 electrostatic meter as measurement standard, using the standard meter method, the accurate and reliable verification to the DC low current reference source could be realized.
利用KEITHLEY 6517静电计为测量标准，采用标准表法，实现对直流小电流标准源准确、可靠的检定。
Its function is equivalent to the voltage source, current source, voltage meter, current meter and resistance meter.
其功能相当于电压源、电流源、电压表、电流表和电阻表的综合体。
The article Introduce piezofranslstor measurement with 2400 digital source-Meter, and describe the testing course and testry methocl and testing technology.
本文介绍了2400数字源表在压敏电阻测试中的应用，主要描述其中的测试过程，测试方法和测试技术。
The utility model comprises a shell body, a thermoelectric couple, an overvoltage protector, an analog switch, a magnifier, a display meter and a power source.
包括壳体、热电偶、过压保护器、模拟开关、放大器、视表、电源。
The invention discloses a wireless and non-source water meter and gas meter.
本发明公开了一种无线无源水表和气表。
The invention discloses a wireless and non-source water meter and gas meter.
本发明公开了一种无线无源水表和气表。
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