Adjust balancing valve until pressure differential gauge reads pressure drop required for desired flow rate gpm.
调整平衡阀直到压差表读出压降符合所要求的流量（加仑/分钟）为止。
Observe the pressure differential gauge. If there is a decrease in the indicated value, the No. 1 check valve is reported as leaking.
观察压差表。如果指示值有下降，则1号止回阀就报告为泄漏。
The measure of pressure at the lower point expressed in terms of this difference.
压差用落差表示的在较低点所测量出的压力
Pressure differences are indicated on weather maps by isobars.
在气象图上气压差用等压线表示。
The Digital Capacitor Instrument Used for Measuring the Pressure (the Differential Pressure);
数字化电容式压力（差压）测量仪表
Static pressure is the designed pressure difference within the pipeline between two testing points. It is a necessary date when selecting different types of pressure gauges.
静压是差压表两个检测点所在管道内的设计压力。它是差压压力表选型时必需的数据。
The voltage may provides an analog representation of the temperature difference.
电压可以成为温差的模拟表示。
Common Problem and Solving Method and Adjustment of Error of Indication about Blood Pressure Gauge
血压表常见故障修复及示值误差调整
Under working conditions the pressure difference should not exceed the full-scale value of the gauge.
在工作时，压差不应该超过压力表的量程值。
After initial pressure differential reading is taken, refer to flow rate charts to obtain flow rate based on pressure differential and valve setting.
在获得初始压差读数后，参阅根据压差和阀门设置而得的流量表。
osmotic pressure
渗透压(力), 浓差压
R. M. S.Value Error for Selective Voltmeter in Measuring FM Signal
选频电压表在测量调频信号时的有效值误差
Differential code shift keying for meter reading system based on low-voltage power line
差分码移键控在低压电力线抄表中的应用
Evaluation of the Measurement Uncertainty for the Indication Error of the Normal Work Pressuremeter
一般工作用压力表示值误差不确定度评定
An instrument, such as a galvanometer, for measuring potential differences in volts.
伏特计一种以伏特为单位测量电位差的仪表，如电压表
The differential pressure across the pressure test points is measured and the flow rate calculated using the calibrated chart or Flow coefficient table.
测量经过压力测试点的压差，并利用标准化图表或流量系数表计算流动速率。
The ratio error of the divider calibration with this method is at10-7 order magnitude.
结果表明：用该方法校准的分压箱，比率误差为10－量级。
All pressure differences between places on the earth's surface can be traced, directly or indirectly.
地球表面任何地区间的压力差都可以直接或间接地测算出来。