persistent chemical造句
例句與造句
- The reactor uses semiconductors to degrade " persistent chemicals " _ those that cannot be broken down by microbial or chemical processes.
- It is a very persistent chemical that can remain in the environment for 1 14 years without degrading, particularly in the soil.
- This was likely done to obtain a more persistent chemical agent as well as in response to an existing embargo placed on alcohol precursors for sarin.
- The indiscriminate use of toxic and persistent chemicals and the resurgence of pests in the history of cotton growing in the US has been particularly well studied.
- President Bush has decided to sign a treaty calling for the worldwide phaseout of a dozen highly toxic and persistent chemicals known as POPs, administration sources said Wednesday.
- It's difficult to find persistent chemical in a sentence. 用persistent chemical造句挺難的
- Today, even though some of the persistent chemicals, such as DDT, and chlordane, have been taken off the market, there are still thousands of non-persistent chemicals in global use.
- Today, even though some of the persistent chemicals, such as DDT, and chlordane, have been taken off the market, there are still thousands of non-persistent chemicals in global use.
- In 1943 the Dugway Proving Ground Mobile Chemical Warfare Service Unit arrived at Bushnell AAF to begin experiments on non-persistent chemical agents, setting up the Chemical Warfare Service Experimental Station.
- Persistent chemicals can be magnified through the food chain and have been detected in products ranging from meat, poultry, and fish, to vegetable oils, nuts, and various fruits and vegetables.
- The Nordic governments are pushing more strongly than any for a ban because many persistent chemicals that evaporate in the South are carried North and condense in the cold Arctic air.
- "Concentrations of persistent chemicals in black-footed albatrosses on Midway are nearly as great as current levels in bald eagles from the highly contaminated Great Lakes, " said Ludwig, a bird population ecologist.
- At every stage or trophic level, the concentration is higher, because the persistent chemicals are not " burned off " when the higher organism uses the fat of the prey organism to produce energy.
- Although Dieldrin and other persistent chemicals of its type, such as DDT and PCBs, have been banned in the United States and Europe for several years, they endure in the environment and accumulate in the body.
- DDT is an organochloride compound that breaks down into DDE, a highly persistent chemical that is stored in the fat of animals that consume it, especially predators like peregrines that are at the top of the food chain.
- Bush also was expected to announce support, possibly as early as Thursday, for a treaty calling for the worldwide phaseout of a dozen highly toxic and persistent chemicals, including PCBs, dioxins and furans, plus DDT and other pesticides, an administration official said Wednesday.
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