冬季南海的水团及其与太平洋的水交换 - 机械,电子文档资料 关键词 甲醛;总氨氮浓度;Nessler法;次氯酸酚盐法 [gap=1153]Key words formadehyde; TAN concentration; Nessler method; Salicylate method
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The utility model has the advantages in simple structure, easy operation, saved power, saved time, and improved working efficiency or the like.
该装置具有结构简 单、操作方便、省力、省时,提高劳动效率等优点。
If Americans recycled the approximately 130 million cell phones that are disposed of annually, enough energy would be saved to power more than 24,000 homes in a year.
如果美国人回收了每年抛弃的大约一亿三千万的手机,将能节约大概能供24,000户家庭一年使用的电。
If Americans recycled the approximately 130 million cell phones that are disposed of annually, enough energy would be saved to power more than 24, 000 homes in a year.
如果美国人回收了每年抛弃的大约一亿三千万的手机,将能节约大概能供24,000户家庭一年使用的电。
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