无铅的

And development, applications, processes and current practices relating to all areas of soldering and surface mount technology.

该刊涵盖了从合金、浆料、焊剂到可靠性和环境影响的SMT所有方面的内容，在当前，为无铅焊料和工艺相关知识的传播提供了一个重要的传播途径。

MC44144 Pinout: Flyback and Synchronous Rectifier Apps Provides Complementary Auxiliary Driver with Programmable Deadtime (Turn-On Delay) between AUX and MAIN Switches Peak Current-Mode Control with 0.5-V Cycle-by-Cycle Current Limiting Hiccup Mode 0.75-V Current Limit TrueDrivet 2-A Sink, 2-A Source Outputs 110-V Input Startup Device Trimmed Internal Bandgap Reference for Accurate Line UV and Line OV Threshold Programmable Slope Compensation High-Performance 1.0-MHz Synchronizable Oscillator with Internal Timing Capacitor Precise Programmable Maximum Duty Cycle PB-Free Lead Finish Package

MC44144引脚说明：反激式同步整流和应用服务提供补充辅助与可编程死区时间之间的辅助和主开关峰值电流模式控制0.5 - V的逐周期电流限制打嗝模式0.75 - V的电流限制TrueDrivet 2 - A号水槽，2 -阿源精确的线路过压阈值线UV和可编程斜率补偿高性能1.0 - MHz的振荡器可同步输出110 V输入启动装置边内部带隙基准，内置精密程控定时电容最大占空比无铅引脚完成包

Because of MTBE in atmosphere, environmental water and soil, it is very important and has far-reaching meaning that study toxity of MTBE no-lead gasoline to protection consumer healthy and to prevent the pollution of the environment.

鉴于空气、水和土壤中MTBE的存在，开展MTBE无铅汽油的毒性研究，对保护使用者的身体健康及未来环境污染的治理都具有深远的意义。

Du self-lubricating bushing made of triple layer composites material which consists of a steel backing,a sintered porous bronze partivles interlayer and calendared with ptfe and pb mixture as surface layer.

精工轴承倍研生产的sf-1无油润滑轴承/du轴套，是以钢板为基体，中间烧结球形青铜粉，表面轧制聚四氟乙烯和铅的混合物，是卷制而成的滑动轴承。

One of the main objectives of this study is to develop a generic thermo-mechanical durability model for Pb-free solders.

这项研究的主要目标之一是建立一个通用的热机械为无铅焊料的耐久性模型。

In the process of Lead-free, because of the difference of lead-free solders and adjustment of technical parameter, we will face many new problems of reliability.

在无铅化进程中，由于无铅焊点焊料的不同和焊接工艺参数的调整，必然会给焊点可靠性带来许多新的影响。

We sale only the finest natural ingredients to make our candles, from our 100% natural wax to our lead-free cotton wicks.

我们销售做我们的蜡烛的仅最美好的自然成份，由我们的100%自然蜡到我们的无铅棉花灯芯。

Our factory successfully passed the international standard system of ISO9001, ISO14001 requirements and in responding to EU directives ROSH unleaded has obvious advantages, because we have introduced the international advanced SIEMENS complete set of production lines, including its latest D series, and the ARSA Reflow Oven, Wave Soldering furnace.

我厂顺利通过国际标准体系ISO9001，ISO14001的要求，并在应对欧盟ROSH无铅指令方面有明显优势，因为我们引进了国际先进的SIEMENS的全套生产线，包括其最新的D系列，及ARSA的回流炉，波峰焊炉。

By the distribution of petroleum by-products, the main species include: petroleum coke, asphalt, sulfur, paraffin, fuel oil, solvent oil, 90 # automotive unleaded gasoline, 180 # air scrubber Friends, 0 # diesel oil, since each type of product models many not to introduce them one by one (we can according to customer's specific requirements for ordering) to establish a stable market network is our goal, but also aims to target customers provide the necessary products, we will ensure ample supply and low prices.

石油焦 、沥青、硫磺、石蜡、燃料油、溶剂油、90#车用无铅汽油、180#航空洗涤友，0#柴油等，由于每类产品的型号众多，暂不一一介绍（我们完全可以根据客户的具体要求订购）建立稳定的市场网络是我们的目标，更旨在为目标客户提供所需的产品，我们将保证货源充足，价格低廉。

It can solve the problems such as inhomogeneous heating of different solder bumps in ball grid array, simultaneous heating of chip and carrier with solder ball, etc.,which have been increasingly serious with the worldwide application of lead-free solder.

该方法能够很好地解决由于无铅钎料的应用引起的日益严重的诸多问题，如球栅阵列中各钎料球受热不均匀和芯片基板与钎料球同时受热等。

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。