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| Subject | Chinese | English |
| agric. | 氢离子浓度指数 | hydrogen ion exponent |
| earth.sc. | 氢离子浓度指数 | hydrogen-ion exponent pH |
| gen. | 氢离子浓度指数用以表示溶液的酸碱度 | value of power of hydrogen logarithm of the reciprocal of the hydrogen ion concentration in gram-molecules per litre |
| tech. | 氢离子浓度指数比色标准序列 | standard colorimetric colour for pH measurement |
| tech. | 氢离子浓度指数比色用的指示剂 | colorimetric indicator for pH |
| tech. | 氢离子浓度指数调节 | pH control |