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hydrogen ion
 hydrogen ion
met. 氢离子
tech. 水合氢离子
| exponent
 exponent
hydroel.st. 指数
math. ; ; 阶码
met. 样品; 试样; 代表

to phrases
hydrogen ion
met. 氢离子
tech. 水合氢离子
hydrogen-ion
earth.sc. 氢离子
hydrogen ion exponent
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