decaying particle,decay particle,disintegration particle是什么意思

用法例句

Ecological environment destruction and agricultural production decay in Shanxi in Qing dynasty;

清代陕西生态环境的破坏与农业生产的衰变

From the test,the performance decay law of the modified bitumen and its mechanism were obtained.

通过模拟SBS改性沥青在生产、运输和施工等情况下的高温储存状况,对成品改性沥青的针入度、软化点、延度和弹性恢复等主要性能指标进行了全面试验,获得了高温储存时改性沥青的性能衰变规律,并分析提出了其性能衰变机理。