part by part meaning in English

逐项地

You can even walk through the comparison product part by part and ask the client what he really means with his comparisons
你可以慢慢地理解比较的内容，询问客户真正需要的内容，比如说：这一部分你想要借鉴什么呢？
Pay attention to the temperature and performing parts by parts , 1 ~ 5 minutes for every part , do not force to scratch if no measles appears
操作时：应注意室温分部位进行，每个部位刮1 - 5分钟，如无痧出现，不宜强行刮痧。
In the part four and five , the comprehensive design of hardware and software is introduced part by part including circuit , flow chart of every module and partial program codes
第四、五部分分别详细地介绍了快速输血输液装置硬件设计的电路原理、软件设计的流程和部分程序代码。