According to comparing various hydrate promotors and their experimental conditions,it indicates that methylcyclohexane is a good promotor to form st...
'That is the most unforgiving speech, ' said Elizabeth, 'that I ever heard you utter. Good girl! It would vex me, indeed, to see you again the dupe of Miss Bingley's pretended regard'.
[
小]。
戊烷时温压条件最易达到,
讲了这样一句
。
个好心
