电流的

We've seen already how maintaining a constant base current through an active transistor results in the regulation of collector current, according to the β ratio.

我们已经看到有源晶体管的恒定的基极电流是如何以系数β控制集电极电流的。

It is determined that the sun vector measurement error is about 5.74° which is caused by many factors, such as the non-ideal cosine curve between incident angle and photocurrent, the photocurrent noise, the nonlinearity of the analog circuit and the A/D converter, and the temperature inaccuracy etc.

通过分析获得太阳入射角——光电流非理想的余弦特性、光电流的噪声起伏、处理电路非线性、A/D采样非线性、温度测量不确定性等因素导致的太阳矢量实际测量误差为5.74°。

A novel method of unit commitment scheme selection method is proposed based on fault current sensitivity and combination optimization. Using this method, calculation and verification of tremendous unit commitment schemes are avoided.

本文利用各机组对短路点短路电流的灵敏度和组合优化技术，实现了限制短路电流停机方案的快速选择，避免了对大量机组停机组合方式的逐一计算和校验。

The effects of the dehydration parameter such as temperature, electric field, demulsifier, the concentration of the iron sulfide, polymer, and water in crude oil on the dehydration current was investigated in this experiment. The reasons that the Electric field of the dehydrator is collapsed were analyzed. And some methods could decrease the dehydration current were put forward.

利用该套小型静态模拟电脱水器试验装置考察了在直流电场下，脱水温度、脱水场强、破乳剂、Fe含量、聚合物含量、碱含量表活剂含量和原油含水量等因素对脱水电流的影响，分析了电脱水器垮电场的原因，并提出了降低原油乳状液脱水电流的方法。

The experiment results of the improved and the former charger/discharger are given in the end. The results indicate that the harmonic currents of the improved one have been reduced obviously.

最后，论文通过实验对改进前后充放电器电路的输入电流进行了比较，表明该改进方案对输入电流的低频和高频谐波都有较好的抑制效果。

Three-phase bridge incontrollable full-wave rectifier circuits and the inverter circuit constitute the main circuit of AC-DC-A voltage source inverter system.

该方法通过判断输出电压矢量的角度来获取三相电流的方向，避免了电流检测中多个零点的现象。

In order to elucidate the effect of membrane stretch on ionic currents, we employed the whole-cell patch-clamp technique to investigate the effects of different kinds of stretch on voltage-dependent calcium currents in antrial circular smooth muscle cells of the guinea-pig.

利用全细胞膜片钳技术，在胃窦环行肌细胞上观察了不同方式的牵张刺激对电压依赖性钙电流的影响，探讨牵张刺激对胃窦平滑肌细胞电压依赖性钙电流的作用。

In order to elucidate the effect of membrane stretch on ionic currents, we employed the whole-cell patch-damp technique to investigate the effects of different kinds of stretch on voltage-dependent calcium currents in antrial circular smooth muscle cells of the guinea-pig.

利用全细胞膜片钳技术，在胃窦环行肌细胞上观察了不同方式的牵张刺激对电压依赖性钙电流的影响，探讨牵张刺激对胃窦平滑肌细胞电压依赖性钙电流的作用。

These results suggested that hypotonicity inhibited ATP-actived currents via TRPV4 receptor, which was mediated partly by reducing cAMP concentration directly rather than by PKA and downstream process.

以上结果表明，低渗透压作用于TRPV4受体，可能通过直接抑制cAMP的生成而抑制P2X受体介导的电流，从而发挥对ATP激活电流的抑制作用。

The concentration-response curves for ATP with and without preapplication of hypotonicity showed that preapplication of hypotonicity shifted the curve downward; maximal amplitude of IATP with hypotonicity decreased by 25.26±2.41%, while the threshold value remained unchanged; the EC50 value of the two curves were very close(1.19×10-4M vs 1.33×10-4M).

3在低渗透压(260mOsm)环境下，ATP-激活电流的浓度反应曲线明显下移；阈值和最大反应浓度不变，EC50为1.19×10-4M，与单独加ATP时的1.33×10-4M基本一致；而最大反应浓度时的ATP电流幅值减小了25.26±2.41%(n=6)。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。