?????
???????0.15%????????
????????pH735?745????pH 735745??????????pH????NaHCO3-H2CO3?Na+???
?????????????????????????????K????
?Na+????????????????NaCl?Na+?????????????????
???????Na+??Na+??????????
??Na+?????????
?
1?????????????
2????
3??????
4?ATP????????????
5???
6????
?
???????????^?????0.5?
?????????????(????)?????????0.751.25?
????????
??????
????
???
??????????????????????????????????
???