Methods Sera were obtained from 30 healthy people using 7 types of coagulation-promoting vacuum tubes . The effect of promoting coagulation and the results of biochemical examination were compared with that of general vacuum tube .

方法采用7种 真空 促凝采血管对30名健康人制备血清，将其促凝效果和常规15项生化指标检测结果与普通真空采血管进行比较和评价。

Vacuum tubes were hot bulky fragile and short-lived .

真空 管温度高、体积庞大、脆弱且寿命短暂。

The technic has been successfully adopted in the manufacture of microwave vacuum tubes .

这一工艺已成功应用于产品的 批量生产。

Before transistors appeared large and heavy vacuum tubes were used in all radio sets .

晶体管出现之前，所有收音机都用又大又重的 真空 管。

Transistors are smaller and less expensive than vacuum tubes and they operate faster and produce less heat .

晶体管比 真空 管体积小、价格低，而且运行快而发热少。

We use the vacuum tubes to heat the thermodynamic medium then the energy of the heated thermodynamic medium will drive the low temperature thermodynamic machine to generate electricity .

用全 玻璃 太阳能 真空 管 集热模块加热传热介质，利用传热介质蓄含的热能驱动低温热机进行发电；

The first electronic computers used vacuum tubes and other components and this made equipment very large and bulky .

第一批电子计算机使用 真空 管和其他元件，这是设备变得十分庞大。

Its wide use in guitar amplifiers has caused it to be one of the very few small-signal vacuum tubes to continue in production since it was introduced .

它在吉他功放里的广泛应用使得它成为少数的、能得以持续生产制造的小讯号 真空 电子 管。

The fourth chapter describes the method of mechanical analysis which is used to analyze vacuum tubes and then simulates and calculates the internal force compare the internal force characteristics at the different vacuum finally make the reinforcement and calculation of carrying pipeline .

第四章首先说明了承载管道的力学分析方法，然后对其进行了内力模拟，比较不同 真空度时的内力特性，最后对混凝土管片做配筋和检算。

The vacuum tubes took many space of the fuselage and the radar size is so big that the torpedo bay is hard to placed .

真空 管占据了机身很大的空间，雷达尺寸太大导致鱼雷舱很难布置。

Venous blood with EDTA-K2 from same one sample were divided into 3 vacuum tubes to prepared smears after different periods in 4 ℃ 22 - 25 ℃ and 37 ℃ respectively .

另将同一EDTA-K2 真空抗凝 管中的血分成三份，分别置4℃、22-25℃、37℃条件下，在不同时间段制备血涂片；

Analysis on Common Waste Product of Ceramic Vacuum Tubes

陶瓷 真空 管 壳常见废品分析

Being small and light makes transistors more advantageous to vacuum tubes .

由于尺寸小，重量轻，晶体管优于 真空 管。

Old equipment had not only such large components as vacuum tubes but also the wires which joined the parts together .

旧式设备不但有像 电子 管这样的大元件，而且还有把这些元件连在一起的导线。

Their many vacuum tubes and mechanical parts required constant maintenance .

其中有很多 电子 管和机械零件，需要经常维修。

A system of tunnels turbines and vacuum tubes has been devised to automatically suck trash from dustbins and deliver it to trash stations .

一套由地下管道、涡轮机和 真空 管组成的垃圾输送系统能够自动将垃圾箱中的废弃物吸入输送管道并运送到垃圾站。

We usually use vacuum tubes such as the first generation of computer computer .

而我们通常把这种使用 真空 管的计算机称为第一代计算机。

In semiconductor receivers transistors take the place of vacuum tubes .

在半导体收音机中晶体管代替了 真空 管。

The principal functions that may be performed by vacuum tubes are rectification amplification oscillation modulation and detection .

真空 管的五大主要功能是整流、放大、振荡、调制和检波。

The initial launch using rockets upset the gyroscopes and radio guidance was unreliable because vacuum tubes suffered under high acceleration .

而最初用火箭来发射却干扰了回旋装置，而且无线电导航也缺乏其可靠性，原因是 真空 管在高度加速的情况下承受不了压力。

Aimed at the problem of vacuum tubes working in vacuum switch applied in coal mines the reasons and results of air escape taking place in vacuum tubes a modified step is adopted to set up a protection unit for vacuum tube in vacuum switch .

针对真空开关在煤矿推广应用中 真空 管存在的问题，以及一旦漏气造成的后果和原因进行了分析，提出改进措施，并对在真空开关增加真空管的保护装置进行了探讨。

Vacuum tubes require DC voltage sources as well .

真空 电子 管也要求以直流电压为电源。

Influence of serum preparation with separating gel vacuum tubes on the determination results and stability of blood glucose complement C3 and neuron specific enolase

分离胶 采血管制备血清对血糖、补体C3和 NSE测定结果及稳定性的影响

These silicon switches were much smaller than the vacuum tubes used in early circuitry .

这些硅晶开关比用于早期电路的 真空 管要小得多。

Comparison of CK-MB examination among three vacuum tubes

三种 真空 管中CK-MB浓度的检测结果比较

First-generation computer : A computer that used vacuum tubes as switching elements .

第一代电脑：采用 真空 管做开关元件的电脑。

Application of a Super Frequency Brazing to Microwave Vacuum Tubes

高频钎焊在微波 电子 管中的应用

Traveling wave tube ( TWT ) is one of the most important types of the microwave / millimeter wave vacuum tubes .

微波/毫米波 电 真空 器件中，行波管是最重要的器件之一。

Method for the determination of the resistivity of tungsten and molybdenum used in electric light sources and vacuum tubes

GB/T4192-1984 电 真空 器件及电光源用钨、钼材料电阻率的测试方法

To achieve the high impedance required specially designed electrometer vacuum tubes field effect transistor must be used in the input stage .

为适应高阻抗需要，仪器输入电路中须用特殊设计的静电计专用 电子 管、场效应晶体管。