The positive polarity pulse will make better result for the samples than use negative polarity pulse.
对平行极化、方向指向阳极的样品，只要极化电场强度不是很大，宜选用正极性极化脉冲；
The corona inception voltage produced by negative polarity increased at first and then decreased, and corona characteristic has little changes.
负极性电晕起晕电压先升高后降低，电晕特性变化很小。
The circuit can output analog voltage signals with positive and negative polarity according to the phase relation of encoder signals of orthogonal output type.
它可以根据正交输出型编码器信号的相位关系，输出具有正负极性的模拟电压信号。
Negative polarity terms in the English language are composed of noun phrases, adverb phrases, prepositional phrases and adjectives with the meaning of micro-quantity.
英语中的否定极性词语大多由表示微量含义的名词(短语)、副词(短语)、介词短语和形容词等组成。
The unipolar transistor has a negative polarity or a positive polarity in accordance with the first terminal or the second terminal electrically connected to the unipolar transistor.
单极晶体管根据第一端子或者第二端子电连接于单极晶体管而具有负极性或者正极性。
The corona voice strengths and levels of radio interference produced by positive polarity wire have little changes, and those produced by negative polarity wire increase with temperature.
正极性导线电晕声音和无线电干扰变化都不大；负极性导线电晕声音和无线电干扰都增大。
The R-groups give the amino acids their physical-chemical characteristics such as polarity (hydrophobic or hydrophilic) and charge (acidic or positive versus basic or negative).
R基团赋予氨基酸物理化学特性，例如极性（亲水性和疏水性）以及电荷（酸性或正电荷，碱性或负电荷）。
We have spoken at length about negative and positive polarity as service to self and service to others.
我们已详细地谈论关于负面和正面极化，如同服务自我和服务他人。
The effect of electrostatic force of the drive voltage on the accelerometer had been researched when the bias voltage polarity is positive-negative configuration.
前人在研究驱动信号对传感器的静电力效应时，用偏置电压极性为正—负配置的驱动信号进行研究。
The main factors governing photoinduced toxicity of the anthraquinone are molecular polarity, the ability of electron transition and the largest negative net atomic charges.
影响蒽醌类化合物对大型溞光敏化毒性的主要因素是分子的极性、电子的跃迁能力和原子最负净电荷。
The experimental results of analogue circuit show that type-S negative resistance can be obtained by using two like polarity transistors with various circuit connections.
模拟电路实验证明用两个同极性的晶体管以多种电路接法都能获得具有S型负阻特性的两端器件。
DIS has its own drawbacks by having half of the plugs firing with an acceptable negative voltage, while the other half is fired by the less acceptable positive polarity.
DIS有自身的缺点，由于有一半的插头接通一个可接受的负电压，而另一半接通不太能接受的正极。
According to Stevens, the idea is to form a polarity on each cylinder, so that they are positive on the outside and negative on the inside at the lowest point.
据史蒂文斯，这个想法是要形成对每一个极性汽缸，使他们在外面是积极的和消极的内以最低点。
While the typical value of the current source is shown as 50pa DC, this can vary by several orders of magnitude. Its polarity can also be positive or negative.
图中所示的电流源典型值为50paDC，其幅值会发生几个数量级的变化，其极性亦可正可负。
Depending on the polarity of an ESD event you apply to the circuit's input connector, its high-voltage spike discharges through diode D1A or D1B into the positive or the negative power-supply rail.
依靠ESD适用电路输入连接器的极性，其高电压放电通过二极管d 1a或d1b进入供电正向或负向电源。
The surface body electrocardiogram(ECG) manifestations of biatrial pacing are that P wave duration shortens, the polarity of P wave changes to negative, PR interval gets shorter correspondingly.
双房同步起搏体表心电图表现为P波时限短、负向或正负双向，PR间期相应缩短。
When electrode negative ratio is zero, which is using MIG welding with DC ami welding wire being positive polarity, weld penetration is maximum , wire melting speed and deposition rate are minimum;
当负极性比率等于零即直流且焊丝为正极性的MIG焊时，其焊缝熔深最大，焊丝熔化系数最小，熔敷速度最小；
The variable polarity power supply can satisfy the welding process of the aluminum and aluminum alloy by adjusting the current frequency, positive and negative current time and amplitude value.
调节正负半波的幅值、频率及占空比能满足铝及铝合金的焊接工艺要求。
The results showed that negative air ion concentrations increased gradually and ion polarity ratio decreased gradually from city center to suburb.
结果表明：从福州市中心向郊区空气负离子浓度逐渐增大，单极系数逐渐减小；
The terms "straight" and "reverse" polarity are used around the shop. They may also be expressed as "electrode-negative" and "electrode-positive" polarity.
术语，正极和反极通常情况下应用在工厂中，他也可以用焊条反极和焊条正极来表示。
The terms "straight" and "reverse" polarity are used around the shop. They may also be expressed as "electrode-negative" and "electrode-positive" polarity.
术语，正极和反极通常情况下应用在工厂中，他也可以用焊条反极和焊条正极来表示。
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