trapping through purging

• 吹扫捕集

trapping through purging的用法和样例：

例句

1. Puffing and trapping technique was used in the sample pretreatment.
   用吹扫捕集法作试样预处理。
2. The experimental conditions for the sampling by purging and traping were optimized.
   同时对吹扫捕集的试验条件进行了优化，得到了满意的结果。