Results showed that nitrite formation appeared mainly in the initial stage of fermentation, and nitrite disappeared gradually with the decrease of pH value.
结果发现，亚硝酸盐的出现期主要集中在发酵前期，随发酵液酸度的增加亚硝酸盐逐渐消失。
The theory of random signal has been widely used in the fields of communication, radar, navigation and cryptology in the initial stage of its formation.
随机信号理论在它形成的初期，便在通信、雷达、导航以及密码学等领域中获得了广泛的应用。
The I-V curves of the initial stage of porous silicon formation have been measured, and the amount of charge transfer for silicon atoms adsorbed different elements has been calculated.
测量了在多孔硅形成初期阶段的电流i -电压V曲线，计算了硅表面原子吸附不同元素时电荷的转移量。
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