0 a substance of no value or use that is made during a process in which something useful is produced -- 无用的副产品；工业垃圾
Cadmium is a toxic waste product of the electronics industry. 镉是电子工业产生的一种有毒废物。
But we want to avoid waste, because it is the waste product of insecticides which is causing the difficulty.
Urea is usually excreted as a waste product from the kidneys.
Historically, this type of gas was released as a waste product from the petroleum extraction industry.
They do not throw all this waste product away; they process it.
So here is a case where you can take a waste product or a waste potential and convert it into an industry.
However, it has simply been a waste product and, therefore, it has been used and people are pleased that is has been used.
Of particular environmental concern is the waste product phosphorus.
That area of research covers fuel storage and dust emissions control as well as the environmentally acceptable methods of ash and other waste product disposal.
