lead cover

According to the importance of administration in lead sealing of electric energy measurement and its enormous quantities,this paper introduced the exploitation and design of Management Information System(MIS) of lead sealing.

针对电能计量铅封管理的重要性和数量巨大的特点,介绍了铅封MIS系统的开发、设计。

A technics of lead-free package was developed by the IC manufacturers for electronic products in compliance with the lead-free trend.

无铅封装工艺是IC制造商为了顺应电子产品无铅化趋势而发展起来的,但存在晶须生成的潜在威胁。

lead seal single slip liner hanger

铅封单卡瓦衬管悬挂器

The Study of Low Temperature and Free-Pb Sealing Glass for Panel Dispay

平板显示器用低温无铅封接玻璃的研究

Reliability analysis of PBGA devices with different finishes under hygrothermal environment in lead-free electronics package

无铅封装中镀覆层对PBGA耐湿热可靠性的影响

We found two vans with their seals missing and one van badly bruised. Please sign it.

我们发现两只集装箱铅封失落，一只集装箱严重擦损，请签字。

That letter was written in pencil.

那封信是用铅笔写的。

rechargeable sealed lead-acid battery

封闭式可充电铅酸电池

On-Line Diagnostic Technique for VRLA

通信用密封铅蓄电池组在线诊断技术

They used heavy lead containers to enclose radioactive substances

他们用厚实的铅质容器封存放射性物质。

Interfacial Reaction and Reliability in Lead-free Electronics Packaging;

无铅电子封装中的界面反应及焊点可靠性

Development of Lead Free Solder and Its Interfacial Issues in Electronics Packaging;

电子封装互连无铅钎料及其界面问题研究

Research and Design on Intelligent Charger for 12V Valve-regulated Lead-acid Battery;

12V阀控密封铅酸蓄电池智能充电器研发

Study of the Valve-regulated Lead-acid Battery On-line Monitoring System;

阀控式密封铅酸蓄电池在线监测系统的研究

Research of Improving Deep Cycle Life for the VRLA Battery;

提高阀控密封铅酸蓄电池深循环性能的研究

Interfacial Evolution and Reliability of Lead-Free Solder Joints for Electronic Packaging;

电子封装中无铅焊点的界面演化和可靠性研究

The principle and Maintenance of VRLA Batteries

阀控密封式铅酸蓄电池的原理及其运行维护

The Application and Maintenance of the Sealed Lead Acid Rechargeable Battery in Substation

阀控式密封铅酸蓄电池在变电站的应用及维护

When I type out the letter, it will take less space than this pencil copy.

要是我用打字机把这封信打出来，会比用铅笔抄的的省地方。

Herbert had been writing with his pencil in the cover of a book.

赫伯尔特用铅笔在一本书的封皮里边写了些什么。