by pre-conditioning method 是什么意思

by pre-conditioning method 是什么意思 conditioning是什么意思 air- conditioning是什么意思? conditioning shampoo是什么意思 body-conditioning是什么意思 air conditioning是什么意思? PRE是什么意思 method是什么意思 by the method 还是with the method 英语翻译Critically evaluate this method as compared with the pre Socket Closed by Pre Server! stata中pre是什么意思