The qualitative analysis of N polyaromatics in heavy oil was made by a double adsorption separation followed by the application of low voltage ionization and high resolution MS direct sampling.
通过两次吸附分离，然后采用低压电离，高分辨质谱直接进样技术对重馏份油中的含氮多环芳烃进行定性测定。
The temperature behavior of the forward voltage VF of the P-N junction is discussed.
本文讨论了低温下P -N结的正向电压降v _ F随温度t变化的特性。
When averaging the outputs of classic voltage amplifiers, you can reduce the noise to a fraction of 1/ by using N amplifiers and three times as many resistors (Reference 2).
当平均经典电压放大器的输出时，通过使用N个放大器和三倍电阻减少噪声到1/ （参考文献2）。
Fast calculating node voltage and sensitivity of node voltage to any system operating parameter is very important to the real time stakeout and analysis of voltage stabilization in a N-1 system.
快速求取n - 1网络下各节点电压和各节点电压对任一节点系统运行参数的灵敏度对于N - 1网络下的实时电压稳定监视和分析具有重要意义。
The common causes for high N-PE voltage and the methods for reducing N-PE voltage are also discussed.
分讨论了引起N -PE电压的常见原因以及降低N - PE电压的常用方法。
Singlechip AT89C52 was adopted by intelligent real available value voltage-monitoring apparatus to sample N times for the electrical network voltage between equal spaces in one cycle.
智能型真有效值电压监测仪，采用AT89C52单片机，在一个周期内对电网电压等间距采样N次。
The first selected element selects two voltage references from the first group of voltage references according to m most significant bits of the N-bit digital signal.
第一选择单元依据N位数字信号的M个最高位，由第一组参考电压中选择出两参考电压。
The second selected element selects one of the second groups of voltage references as an output analog voltage according to N-M least significant bits of the N-bit digital signal.
第 二选择单元依据N位数字信号的N-M个最低位，选择第二组参考电压之一作为输出模拟电压。
Our results indicate that voltage-gated ion channel currents recorded by Clampex will be more accurate and reproducible by properly using P/N leak subtraction.
结果表明， 在采集电压门控性离子通道电流时，合理地利用P/N漏减会使离子电流记录更为准确可靠。
Furthermore, the external calcium was found to influx mainly through N-type calcium channels and voltage-gated sodium channels.
我们进一步用膜通道阻断剂验证，发现胞外钙的流入主要是通过N型钙通道和电压门控钠通道流入胞内的。
Methods Brainstem slices were prepared from postnatal 1~ 5 days mice and stained by RH155, an absorption voltage-sensitive dye, for 20 mi n.
方法自新生小鼠（1～5天）制备离体脑干切片，用吸光性电压敏感染料RH155染色2 0分钟。
Methods Brainstem slices were prepared from postnatal 1~ 5 days mice and stained by RH155, an absorption voltage-sensitive dye, for 20 mi n.
方法自新生小鼠（1～5天）制备离体脑干切片，用吸光性电压敏感染料RH155染色2 0分钟。
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