dual amplification

This paper goes into the application of the GaAs Dual-Gate FET to the high frequency tuning-amplification and frequency conversion in a TV UHF channel selector and gives some experimental results.

本文讨论了砷化镓双栅场效应管在电视接收机UHF频道选择器中作高频调谐放大和变频应用时的一些考虑，并给出有关的实验结果。

Dual gene amplification and selection system with dihydrofolate reductase and glutamine synthetase genes effectively increase the foreign gene expression

二氢叶酸还原酶和谷氨酰胺合成酶双基因筛选扩增系统对外源基因表达的影响

The results have shown that this electrochemical biosensor based on dual signal amplification can detect target DNA with an improved sensitivity and selectivity. The linear range is from 100 pM to 10 nM with the detection limit of 33 pM.

实验结果表明，这个基于双重信号放大反应的电化学生物传感器可以非常灵敏和特异地检测目标核酸，线性范围从100pM到10nM，检测限为33pM。

The paper expounds the principle and course of a new type pressure amplifier which realizes dual-class pressure amplification in the method of air-air.

文章论述了一种新型增压缸以气&气方式实现二级增压的原理与过程。

This paper goes into the application of the GaAs Dual-Gate FET to the high frequency tuning-amplification and frequency conversion in a TV UHF channel selector and gives some experimental results.

本文讨论了砷化镓双栅场效应管在电视接收机UHF频道选择器中作高频调谐放大和变频应用时的一些考虑，并给出有关的实验结果。