The remote control device crystal frequency stabilization using pulse amplitude modulation transmitter, A simpler circuit, high frequency stability, launched 28MHZ are continuous carrier amplitude.
该遥控装置采用晶体稳频脉冲调幅发射机,电路较简单,频率稳定度高,发射的是间断的28MHZ等幅载波。
An alcoholic continuous fermentation using cassava as material, and by immobilization of glucoamylase preparation and yeasts using polyvinyl alcohol (PVA) gel as the carrier was studied.
采用聚乙烯醇(PVA)为载体共固定化酵母菌细胞和糖化酶制剂,并以木薯为原料进行酒精连续发酵工艺研究。
Operation parameters were examined when the discontinuous and continuous sample introduction systems with carrier gas N2 and continuous sample introduction system with carrier gas CO2 were used.
考察了当采用N2为载气蠕动泵断续、连续进样和发生CO2为载气连续进样时,各实验参数的影响及方法的分析性能。
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