the application of reflow soldering and smt in r& d and production

application of image processing in smt

视觉辅助表面贴装技术中图像处理技术的研究

the effect of low viscous wheat and pentosanase in weaned piglets diets

低黏度小麦及戊聚糖酶用于断奶仔猪日粮的效果研究

study on viscosity and adhesion of low viscous size

高浓低粘浆料粘度与粘附力研究

low viscous and easy to dilute.

粘度低、易稀释

applying the software of ansys, based on the flat plat specimen, the finite element analysis about the wear resistance of bionic non-smooth through-hole specimen was given.

利用ANSYS软件，以平板试件为对比基准，对具有仿生非光滑通孔结构试件的耐磨机制进行了有限元分析。

components with right angle through-hole structure and lead angle through-hole structure were designed, and experiment on its lubrication friction characteristic was performed on the jf-150 bench test.

设计了有倒角通孔及无倒角通孔形仿生结构试件，并在JF-150型摩擦试验机上进行了润滑摩擦试验，探讨了通孔形仿生结构对摩擦副的磨擦、磨损影响特性。

the final product showed that the experiment results from drilling and plasma desmear through-hole in rigid-flex zone greatly improved the reliability of metallized through-holes.

最终产品显示，金属切削刚挠结合区通孔，等离子清洗通孔等实验的结果大大地提高金属化孔的可靠性。

the porous anodic alumina template with through-hole can be used conveniently to prepare nano-line and nano-pipe.

具有通透孔洞的阳极氧化铝模板可以方便地用于纳米线、纳米管等的制备。

in this paper, the principle of the through-hole blasting method is introduced and the blasting parameters of shallow-hole method and through-hole method are compared.

本文介绍了透孔法的基本原理，对常规浅孔法和透孔法主要爆破参数进行了比较；

the research of through-hole reflow

通孔回流焊技术的研究

with a practical example, the advantages and disadvantages of the through-hole method, relative to the common shallow-hole method, are expounded.

利用一个实例，阐述了透孔法相对于常规浅孔法的优、缺点；

negative effect of chromium added to diet on pig breeding; research on acidic copper additives used in through-hole plating of pcb manufacture

养猪生产中添加铬制剂的负面效应研究印制电路板中通孔电镀铜添加剂的研究

this system has the advantage of simple circuit, low cost and easy program, and can be used in various control systems of through-hole plating machine.

该系统具有电路简单，成本低，软件易于实现等优点，适合在各种孔金属化设备的控制系统中采用。

research of fillet-lifting phenomenon in through-hole circuit soldered by sn-bi-ag-cu alloy

Sn-Bi-Ag-Cu钎料通孔焊点剥离现象试验研究

prediction on response to the thermal fatigue of through-hole solder joint i. experimental research of solder joint response to the thermal fatigue

通孔元件焊点的抗热疲劳性能预测Ⅰ.焊点抗热疲劳能力的实验研究

both common shallow-hole blasting and through-hole blasting can be used for demolition of concrete ground.

混凝土地坪的爆破拆除既可以用常规浅孔破碎法也可以用透孔法。

fabrication technology of micro through-hole on silicon wafer

硅基片微型通孔加工技术

strength calculation and experiment research for die-sinking and through-hole procedure of bridge-building machine

造桥机开模与过孔过程强度计算与实验研究

detection of the through-hole defect in concrete by photography

混凝土贯穿空洞的摄影探测

in recent years, electroless copper have important applications in circuit board pcb through-hole plating.

近年来，化学沉铜在线路板PCB通孔电镀中具有重要的应用。