查询词典 leadless

People has been committed to hunting for the alternative leadless products of lead solders, and found that the lead-free solder joints often display some special defects in the long-term use of them. The serious lift-off phenomenon has gradually aroused people's attention.

人们致力于寻求含铅钎料的无铅替代产品，并在长期使用过程中发现无铅钎料焊点会产生某些特殊的缺陷，其中较为严重的剥离现象也逐渐引起人们的重视。

The simulation and experimental results verify the validity of proposed illuminator for leadless solder joint inspection,and show it can enlarge the feature distances from different classes.

仿真和实验结果表明，所设计的光源在检测无铅焊点时同样有效，并能使不同类焊点间的特征距离更大，最大为半球形光源照射下的11.88倍，从而提高了特征在无铅焊点缺陷检测的分辨能力，验证了光源设计的有效性。

The performance of leadless and cadmiumless fluxing agent for overglaze colors was investigated through orthogonal experiments.

运用正交实验方法对无铅无镉釉上彩熔剂性能进行研究。

With the RoHS promulgated by European Union and the enhancement of human environmental pro- tection consciousness,leadless low-melting glasses is getting more and more attention.

概述了无铅低熔玻璃的国内外研究现状，对无铅硼酸盐，磷酸盐、钒酸盐玻璃等体系的组成以及物化性能进行了较为全面的介绍，并分析了无铅低熔玻璃今后发展的难点和趋势。

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 is similar to Dr Echt's leadless pacemaker, but it uses electromagnetic induction, rather than ultrasound, to stimulate a small implanted receiver, which in turn stimulates the heart.

他的方法与 Dr Echt 有些类似，但他没有用超声波而是利用电磁感应效应来刺激植入的小型接受器，接受器再刺激心脏。

A version of leadless type surface mount crystal unit.

无引线表面贴装晶体。

Meanwhile Heinrich Wieneke, an assistant professor of cardiology at the West German Heart Centre in Essen, is working on another leadless approach.

埃森的 West German Heart Centre 一位心脏学副教授 Heinrich Wieneke 正在努力研发另外一种无需引线的方法。

PZEV vehicles fuel tank used plate steel materials,leadless and environmental protection fuel tank used plate steel ,and comp...

最后，展望了国内燃油箱用钢板材料市场的前景。

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。

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。