250v

With the substrate bias voltage increases from - 50V to - 250V , the surface roughness is very smooth ;

随着基体负偏压的增大（-50～-250V），薄膜表面光滑平整；

The result shows that the low voltage electrostatic demulsification is successful only when 250V or above voltage is used during demulsification , and the higher the demulsification voltage , the faster the demulsification process .

研究结果表明，低压静电破乳时，只有破乳电压超过250V以后才有较好的破乳效果，电压越大破乳速度越快；

Train of pulses , and modulated train of sine pulse . Waveform patterns can be generated by programming . The main parameters of the programmable stimulator are as follows : pulse amplitude 0 ~ 250V ;

通过编程，该刺激器可输出波形为单次脉冲、串脉冲和正弦调幅波脉冲的刺激脉冲，其主要性能是幅度：0～250V；

The structure is small with wide applications . The life of switch is 20,000 times , with working range : DC6A 125V or DC 3A 250V , the travel distance of key bar is 2.5 mm , with operation force at 4 ± 0.5N .

结构小巧，适用范围广，开关寿命2万次，工作范围：DC6A125V或DC3A250V。键杆行程为2.5mm。

The center of measuring sticks had a black zone with the circle shape . The setting voltage was in direct proportion to the welding depth of pure titanium and in inverse proportion to the welding strength with averages of 221MPa ( 250V ) to 154MPa ( 330V ) .

电压与纯钛的焊接深度呈正比，与其强度呈反比，均值为：250v时221MPa～330v时154MPa。