This old man has an active brain.

He played this old man very well.

他演这位老人演得很好。

This old man resigned his commission for the young people.

这个老人辞去了他的职务，留给年轻人。

As they looked at the salary list, one of them said, "Why do we keep this old man on year after year?"

当他们查看工资单时,其中一个说："为什么我们要年复一年地继续雇佣这个老人?"

Vaccum system commom problems analysis and treatment of Zimmer PET process

吉玛PET工艺真空系统常见问题分析及处理方法

Investigation of hydrogen trapping in metals by vaccum thermal extraction method

真空热抽取法研究金属中的氢陷阱

The experimental study on Ni powder production by solid carbon reduction method in vaccum condition

固态碳还原法真空制取金属镍粉的试验研究

Design and study of vaccum and bring pressure digester for pulp

真空加压式造纸蒸煮锅的研究与设计

The Research and Monitoring on Device of Condition Based Parameter of Vaccum Circuit Breaker

真空断路器状态参数测试器研究

Application Range and Development Trend of Several Kinds of MY Vaccum Switchgears

几种中压真空开关的应用范围及发展趋势

Development of the vaccum filter of horizontal hand type

水平带式真空过滤机的发展

Properties and application technology of rubber lining for equipment under high temperature and vaccum condition

高温真空设备橡胶衬里的特性及应用

Master Equation for Reduce Density of the System in Squeezed Vaccum

压缩真空场中系统约化密度主方程

Rebuilding Design and Application of 5T Liquid Steel Vaccum Treatment Plant

5吨钢液真空处理设备的改造设计与应用

The Development of automatic Deviation-correcting System for vaccum tubes

保温管自动纠偏系统的研制

Application of vaccum filter made in China to PTA plant

国产真空过滤机在PTA装置中的应用

Main Influence Factors for Filtering Efficiency of Vaccum Permanent magnet Filter

影响真空永磁过滤机过滤效果的主要因素

Software Designing of an Expert Control System in vaccum Distillation

减压塔专家控制系统的软件设计

Study of Magnetic Field Control Type ECR Sputtering Method Used Vaccum Waveguide

真空波导磁场控制型ECR溅射法的实验研究

The Application of Multi-Disc Vaccum Filter in Domestic Paper Industry

国内造纸多圆盘真空过滤机的应用

The Application of Series Control for Capacitors Vaccum Dry System

串级控制在电容器真空干燥设备中的应用