DCA
abbr. 国防通信局（Defense Communications Agency）；民航局（Department of Civil Aviation）
例句
And she said she hopes to start testing many products for DCA.
她希望开始对更多产品进行DCA测试。
Scientists also know DCA by its chemical name, 1, 2-dichloroethane.
DCA就是1 2 -二氯乙烷的化学名称简写。
The gingerbread man was made of molded plastic that had been made with DCA.
用来做姜饼人模型的塑料就会产生DCA。
