过程气相色谱仪由取样机构，柱和检测器组成。
The process gas chromatograph consists of a sampling mechanism, a column and a detector.
取样是高速公路建设过程中的基础一环，对沥青路面质量控制具有举足轻重的地位。
Sampling is key and base approach in freeway construction, is very important to quality control.
取样是高速公路建设过程中的基础一环，对沥青路面质量控制具有举足轻重的地位。
Sampling is key and base approach in freeway construction, is very important to quality control.
应用推荐