“neutral operation”的概念、定义、翻译、参考文献-科学参考

单词	neutral operation
释义	neutral operation [`nü·trǝl ´äp·ǝ`rā·shǝn] ^{COMMUNICATIONS} System whereby marking signals are formed by current impulses of one polarity, either positive or negative, and spacing signals are formed by reducing the current to zero or nearly zero.
随便看	bacterial leaf spot bacterial luminescence bacterial metabolism bacterial motility bacterial photosynthesis bacterial pigmentation bacterial pneumonia bacterial pustule bacterial soft rot bacterial speck bacterial spot bacterial transformation bacterial vaccine bacterial wilt disease bactericide bactericidin bacterin bacteriochlorophyll bacteriocin bacteriocinogen bacteriocyte bacteriogenic bacteriological warfare bacteriologist bacteriology

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