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

1、

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。

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2、

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

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3、

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

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4、

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。

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5、

fabrication technology of micro through-hole on silicon wafer

硅基片微型通孔加工技术

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6、

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

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7、

detection of the through-hole defect in concrete by photography

混凝土贯穿空洞的摄影探测

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8、

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。

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9、

study on drilling tests of pcb through-hole drilling

钻PCB通孔钻切削性能的钻削试验研究

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10、

demolition of concrete ground by through-hole blasting method

透孔法爆破拆除混凝土地坪

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11、

fast spreading speed, suitable wetting ability, even in the case of small through-hole;

上锡速度快、润湿性适中，即使很小的贯穿孔依然可以上锡；

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12、

orthogonal test investigate on wear property of bionic through-hole

仿生通孔形结构磨损特性正交试验研究

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13、

process for direct through-hole plating of printed circuit board

印刷电路板孔直接金属化工艺的研究

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14、

standard surface-mount technology or through-hole techniques provide adequate performance.

标准表面贴装技术或通孔技术提供足够的性能。

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15、

effect of "through-hole" on porous aluminum alloy compressive mechanical properties

多孔铝合金连通孔对压缩性能的影响

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16、

research on acidic copper additives used in through-hole plating of pcb manufacture

印制电路板中通孔电镀铜添加剂的研究

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17、

finite element analysis of wear resistance mechanism of bionic non-smooth through-hole

仿生非光滑通孔耐磨机制有限元分析

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18、

the master switch: the rise and fall of information empires

谁主沉浮：信息帝国兴衰史（二）

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19、

the master switch: the rise and fall of information empires the master switch: the rise and fall of information empires

谁主沉浮：信息帝国兴衰史（一）

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20、

here is the master switch, please be sure to insert the keyboard into its slot.

这是总开关。请记住把钥匙牌插入它的槽内情景对话。

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