Chemical degradation is very slow so that it becomes more concentrated in successive stages of the food chain . 化学的递降分解作用十分缓慢，以致它在食物链连续各阶段中变得更为浓缩。
2.
Chemical degradation is very slow so that it becomes more concentrated in successive stages of the food chain . 化学的递降分解作用十分缓慢，以致它在食物链的连续各阶段中变得更为浓缩。
3.
Decomposition of a compound by stages , exhibiting well - defined intermediate products 降解，递降分解化合物的递降分解，显示出清楚明白的中间生成物
4.
Connectors for electronic equipment - tests and measurements - part 25 - 3 : test 25c ; rise time degradation 电子设备用接头.试验和测量.第25 - 3部分:试验25c .上升时间递降
5.
Connectors for electronic equipment - tests and measurement - part 25 - 3 : test 25c - rise time degradation 电子设备用连接器.试验和测量.第25 - 3部分:试验25c :增时递降
6.
Precipitating process in this area could be divided into four types , namely : even type , gradually decreasing type , eruptive type and peak type . at the same time , the different raining type produced different sediment - transporting process 库区的降雨类型主要有均匀型、递降型、突发型、峰值型等四种，不同的降雨类型存在不同的产流产沙方式。
