Ths paper relates the reasons that cause static electricity as well as the electron circuit plate. It also introduces anti-electrostatic packing of electron circuit plate and tests technology.
本文叙述了静电产生的原因及静电对电子线路板的危害,还介绍了电子线路板的防静电包装方案及检测技术。
The quenching sensitivity of 7050 aluminium alloy hot-rolled plate was studied by using end quenching test and optical microscopy (OM) and transmission electron microscopy (TEM).
用末端淬火、光学金相显微镜和透射电镜技术研究7050铝合金热轧板的淬火敏感性。
With electron microscope the fracture surface and metallographic structure analysis is done for typical sample of Q235, Q345 plate of low elongation, its reason found out, some Suggestions proposed.
用电镜对邯钢Q 235, Q 345中板伸长率低的典型试样进行了断口、金相组织分析,找出了试样断后伸长率低的原因,提出了相应的改进建议。
A low energy, self-shielded electron beam machine for the surface coating curing of wood panel and gypseous plate was introduced.
本文初步描述了利用低能自屏蔽电子帘式加速器固化木器涂料和石膏板表层涂料的生产工艺。
Result: the scanning electron microscope result indicated that growth-speed, quantity and modality in the bioreactor were better than that cultured in static 24-pore plate.
结果:扫描电镜结果表明旋转生物反应器动态培养的细胞生长速度、数量和形态明显优于24孔板静态培养。
A hot-rolled plate cracked during cold bending process. Scanning Electron Microscope and Optical Microscope were used to investigate the cracked plate.
采用扫描电子显微镜和光学显微镜观察了热轧板在冷弯过程中开裂试样的断口形貌并进行了成分分析。
It is very effective to use the scanning electron beam (EB) heating to braze the stainless steel structural part with capillary-to-plate joints.
用电子束扫描加热的方法对具有毛细管板接头的不锈钢结构件进行钎焊是非常有效的。
When 1/4 wave plate 2 and 3 are removed, the ambipolar diffusion constant and mobility of electron charge can be measured.
当去除1/4波片2和3时,则能够测量电子电荷的双极扩散常数和迁移率。
The epiphyseal plate cartilage in the phalanges of 5 patients with Kaschin-Beck disease was observed by transmission electron microscopy.
本文用透射电镜观察5例大骨节病人指(趾)骨的骺板软骨。
When an ideal diode was alive under a magnetic field, it could emit a thermal electron from its negative plate.
通过理论分析,利用理想二极管外加磁场的方法,证明了真空中热电子发射的电子动能分布符合费米-狄拉克分布。
The present paper systematically checks and examines as well as analyzes causes to the cold-bended crack in the hot rolled steel plate Q345 by microscope, X-ray and Electron Probe Micro-analyzer.
利用金相显微镜、X射线衍射仪及电子探针等对Q 345热轧钢板因冷弯产生的裂纹进行了系统检验分析。
The surface defect on medium and heavy plate Q235B was investigated by means of the optical microscopy, scanning electron microscopy and energy spectrum analysis in this paper.
对Q 235 B中厚板表面缺陷处的显微组织、非金属夹杂物等进行了金相组织和扫描电镜观察及能谱分析。
Samples of hot rolled steel plate Q235 in various specifications having cold bending cracks are examined by means of Metallographical test and electron probe analysis.
对不同规格的Q2 3 5热轧钢板冷弯裂纹试样进行了金相检验和电子探针等分析。
A nanometer material stretching device in a scanning electron microscope driven by a piezoceramics plate belongs to the testing field of a nanometer material original position.
压电陶瓷片驱动的扫描电镜中纳米材料拉伸装置属于纳米材料原位测试领域。
Electron dense body-like core and plate structure were observed both in nuclei and cytoplasm.
细胞核和细胞质内均可见核心样电子致密体和布纹样结构。
Because the utility model adopts the form of electron-acceleration of ion-ion bonding so as to cause ion flow collected by a base plate (a workpiece) is only 10 to 15 percent of target current.
由于本实用新型偏压采用电子—离子加速—离子结合形式,使基板(工件)所收集到的离子流是靶电流的10—15%。
Because the utility model adopts the form of electron-acceleration of ion-ion bonding so as to cause ion flow collected by a base plate (a workpiece) is only 10 to 15 percent of target current.
由于本实用新型偏压采用电子—离子加速—离子结合形式,使基板(工件)所收集到的离子流是靶电流的10—15%。
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