适当提高占空比有利于减少气孔数量。
Moderate increase of the duty ratio is benefit to the reduction of porosity.
结果表明，塑料薄膜厚度、通气面积、通气孔数量是影响枣果失重的主要因素。
The results showed that, the thickness of film, ventilate area, and number of ventilate hole were important factors of effecting jujube weight loss.
结果表明，在一定的激光功率下，提高焊接速度可减少金属蒸气的形成，从而降低气孔数；
We find that the pore number will be reduced through depressing metallic vapour if welding speed is increased with constant laser power.
当激励电流提高到20A时，气孔数量急剧减少，焊缝晶粒细小均匀，颗粒状增强相弥散分布；
When the excitation current increases to 20A, the number of pores sharply decreases, the grains are fine and uniform, and the particle reinforced phases are uniformly distributed in the weld.
结果表明，预混芯的气孔数目、气液面积比以及气泡生成室的长宽比均对喷嘴雾化效果有影响。
The results of test show that the air aperture number, ratio of air-liquid area, ratio of length…
我们可根据客户对钻头直径大小、排气孔数量、合金齿形状和钻头头部形状的不同要求分别设计制造。
We can design and manufacture according to customer's requirement of the Bit Dia, No. air holes, carbide button shape and the face shape.
提出采取严格控制扫线作业时间和扫线蒸汽流量，增大油气空间的体积和增加罐顶通气孔数量和面积等措施，可有效地预防该类事故的发生。
The measures to control the vapor purging time and flow rate of vapour, enlarge the oil-gas space and increase the number of air hole as well as venting area are given, which can effective...
提出采取严格控制扫线作业时间和扫线蒸汽流量，增大油气空间的体积和增加罐顶通气孔数量和面积等措施，可有效地预防该类事故的发生。
The measures to control the vapor purging time and flow rate of vapour, enlarge the oil-gas space and increase the number of air hole as well as venting area are given, which can effective...
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