无铅的

The effect of alkaline metal oxides and fluorides on the performances of green leadless fluxing agents for overglaze colors were studied by means of orthogonal experiments.

应用正交试验法，研究了碱金属氧化物及氟化物对环保型无铅釉上彩熔剂性能的影响。

It provides a low-Ag leadless brazing filler metal which has fewer alloy components, low Ag content, low cost, small region of alloy melting temperature, high tensile strength and elongation and large spreading area.

本发明提供了一种合金组元较少，含Ag量较低，成本低，同时合金熔化温度区间小，抗拉强度和延伸率高，铺展面积大的低银无铅钎料。

In the article experiment prove:combination with feine tin-solder-bumps and underbump-metalliza with cobalt be able to longthen life of leadless flip-chip -solderng.

文章通过试验证明：纯锡焊料凸块和含钴底部凸块金属焊层结合可延长无铅焊接倒装片的寿命。

Other effects of lead-free solder paste demolding performance factors such as having a mesh size and aspect ratio.

其它感化无铅焊膏脱模本能机能的成分包含网孔尺寸和宽矮比。

Considering its practicability of nonleaded freeutting brass, Our?II ?research examine a few of its other performance.

考虑到无铅易切削黄铜的实用性，本研究同时对几项其他性能作了检测。

As the developing trends of new gasoline standard to no - lead, low aromatics, low vapor pressure, high octane number and high oxygen content.

随着人们对环境保护意识的增强，汽油质量将向无铅、低芳烃、低蒸汽压、高辛烷值和高氧含量发展。

The optimal composition of lead-free solder of Sn-Ag-Cu system through orthogonal experiment method were studied.

通过正交实验法对Sn-Ag-Cu系无铅焊锡合金的成分进行了优化研究。

This is a physical property of the alloy related to the crystal structure.

这是与无铅合金晶体结构有关的物理特性表现。

To provide the steady, reliable and environment protection lead-free reflow technology.

提供成熟、可靠、环保的无铅回流技术。

The most obvious is the necessity for increased reflow temperature.

最明显的是，使用无铅锡膏必须提高回流焊温度。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。