雅思常用口语词组 drop across
释义：
drop across 偶遇；惩罚
例句：
Read the pressure drop across the valve with a Watts Series PG meter.
利用美国瓦茨系列PG仪器读出通过阀门的压降。
In the past two years, the LCD panel prices drop across the annual 35%.
在过去两年里，LCD面板价格每年降幅越过35%。
They also limit the voltage drop across the igniter during continuity testing.
他们也限制了压降引爆器的过程中的连续性测试。
Should be larger port area to ensure less friction and pressure drop across the valve.
较大开口区域应保证通过阀门较小的摩擦力和压力降。
The amount of voltage used up for each resistor is called the voltage drop across that resistor.
每一电阻所消耗的电压量称为该电阻上的电压降。
To further enhance efficiency the voltage drop across the tracking regulators has been minimized.
要进一步提高效率，需最小化跟踪稳压器过程中的压降。
The temperature at each position and pressure drop across the test section were recorded three times.
每个位置的温度和测试区两端的压降各记录三次。
It keeps the voltage drop across the pass transistor more nearly constant, improving its performance.
他使调整三极管上的电压降接近稳定，改进了他的性能。
Since the voltage drop across the ammeter is negligible, essentially all the test voltage appears across R.
由于安培计上的电压降可以忽略，所以所有的测试电压都出现在电阻R上。
The VF test is performed by sourcing a known current and measuring the resulting voltage drop across the diode.
VF测试需要提供一个已知的电流然后测量二极管上产生的电压降。
As there is a larger volt drop across the resistance inside the amplifier the voltage measured after it will be lower.
由于通过扩大器内部电阻的电流压强降幅较大，所以通过后的测试压强相对较低。
The flow rate, perforation radius and shot density are the key parameters influencing the pressure drop across gravel pack.
分析结果还表明，油井产量以及射孔孔径和孔密度是影响砾石层压降的重要因素。
While two contacts supply a constant current, the other two contacts measure the voltage drop across a portion of the sample.
其中两个探针提供恒定的电流，而另外两个探针测量一部分样品上的电压降。
Since the clearance is so small, the pressure drop across the seal faces, as the few drops flow out, is equal to the pump pressure.
由于间隙很小，随极少油滴漏出，在密封面上的压降等于泵的压力。
The fuel size affect the pressure drop across the gasifier and power that must be supplied to draw the air and gas through gasifier.
燃料大小影响整个气化炉和压降的权力必须提供提请通过气化炉的空气和气体。
The experimental results showed that: the uniform-pressure wind room designed can decrease the pressure drop across the distributor;
试验结果表明：所设计的等压风室利于降低布风板压降；
Measure the reverse breakdown voltage by sourcing a specified re verse current bias, then measuring the voltage drop across the diode.
通过施加规定的反向偏流，然后测量二极管两端的电压，即可测得反向偏置电流。
The resulting voltage drop across r3 will cause erroneous results when the voltmeter measures the voltage drop between probes 2 and 3.
当电压表测量探头2和探头3之间的电压降时，该交流电流在r3上产生的电压降就会引起错误的结果。