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- Pen type General signing pen , oil pen , ball pen . 笔型普通签字笔，油性笔，圆珠笔。
- The phase shift theory and transmission line model of inertance tube in the Stirling type pulse tube cooler were introduced. 摘要介绍了斯特林型脉管制冷机中惯性管调相的原理和惯性管的传输线理论模型，给出了惯性管尺寸的优化计算方法。
- The operating principle of a bridge type Pulse Width Modulation(PWM) power source,driving of switch element IGBT,overvoltage and overcurrent are briefly described in the paper. 概述了桥式脉冲宽度调制（PWM）功率源的工作原理，以及开关元件IGBT的驱动、过压、过流保护等问题。
- The effects of regenerator length and regenerative materials below 80 K on the performance of a single-stage G-M type pulse tube cryocooler (PTC) were tested and analyzed. 研究了回热器长度以及80K以下温区不同回热材料布置形式对单级G-M型脉管制冷机性能的影响。
- The thermodynamics first law and second law analyses were performed for orifice type and double-inlet type pulse tube refrigerator (PTR), and the dynamic characteristics of the flow and heat transfer processes inside the PTR were revealed. 摘要采用热力学第一定律和第二定律分别对小孔型和双向进气型脉管制冷机进行了热力学分析，揭示了制冷机内部的流动和传热过程的动态特性。
- The calculations agree well with experimental results, which indicates that the model is instructive on the optimization of the dimension of inertance tube in Stirling type pulse tube cooler. 3. 这表明该方法对斯特林型脉管制冷机中惯性管尺寸的选取具有重要指导意义。
- Both ADG and feed intake were not effected by the pen types, and FAC also did not affect the total feed intake of sheep. 羊舍类型对绵羊日增重、采食量无显著影响，添加脂肪酸钙也不影响绵羊总采食量。
- The pen type is determined by the 钢笔类型由
- Design of Narrow Pulse Tester Based on Single-chip Microcomputer 基于单片机的窄脉冲测试仪的研制
- New type pulse transducer of self-calibration 新型自检脉搏传感器的研制
- current type pulse width control 电流型控制
- current type pulse width modulator 电流型脉宽调制器
- My deskmate wanted to trade his pen for my book. 我的同桌想用他的钢笔换我这本书。
- He made motions to me to pass the pen. 他向我打手势，要我把钢笔递给他。
- Put down my pen and stop fiddling! 把我的钢笔放下，别用手玩弄！
- She delved in her bag and pulled out a pen. 她在提包里翻找，拿出一枝钢笔。
- Charles bought a pen at the dime store. 查尔斯在廉价店买了一支钢笔。
- Somebody has walked off with my pen. 有人把我的钢笔偷走了。
- He is rooting about for his fountain pen. 他正在寻找他的自来水笔。
- I'm wild about losing my gold fountain pen. 我因遗失了自来水金笔而暴躁不安。
