Ｐ~Ｈ与ＰＨ张汉俊近来，在一些邮电建筑地基勘定报告和部分科技杂志中，常常发现将表示氢离子浓度的倒数的对数的符号（水的酸碱度表示符号）ＰＨ错写成ＰＨ。虽说未造成什么严重后果，但起码是混淆“ＰＨ”和“ＰＨ”的真正含义。时之一久，会以讹传讹。同时，这也不符... P ~ H and PH Zhang Hanjun Recently, in some postal and foundation reports and in some technology magazines, it is often found that the sign (pH of water) signifying the logarithm of the reciprocal of the hydrogen ion concentration is wrongly written PH. Although it did not cause any serious consequences, it at least confused the true meaning of “PH” and “PH.” When a long time, will be false assertion. At the same time, this does not match ...