1·Fly ash was a sort of industrial solid castoff which could be utilized again.
粉煤灰是一种可再资源化的工业固体废弃物。
2·The traditional economy theory of the west follows a assume unconsciously, which is that "the resources is never-ending, and the ability of the nature contains castoff is also never-ending".
传统的西方经济增长理论有意无意地遵循了这样的假定，即“资源是无限的，大自然容纳废弃物的能力是无限的”。
3·The invention relates to recycle and reuse technology of electronic castoff, in particular to a method and a device to remove the element and separate the welding material from the circuit board.
本发明涉及电子废弃物的回收再利用技术，特别涉及一种从电路板上拆卸元器件和分离焊料的方法及装置。
4·The quantities of space debris are increased day by day with the human space activities increasing. Space debris are castoff abandoned by human space activities, they are the dominating pollutant.
随着人类航天活动的日益增强，空间目标数量日益增多，空间碎片是人类航天活动遗弃在空间的废弃物，是空间环境的主要污染物。