PH

美 [.pi 'eɪtʃ]

英 [.piː 'eɪtʃ]

权威英汉双解

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1.	pH 值（溶液或物质的酸碱度。pH 值介于 0 至 14，7 以下为酸，7 以上为碱）a measurement of the level of acid or alkali in a solution or substance. In the pH range of 0 to 14 a reading of below 7 shows an acid and of above 7 shows an alkali .

	a pH of 7.5 pH 值 7.5
	to test the pH level of the soil 测试土壤的酸碱度