“chem”可以造什么句,chem造句
来源:语文精选馆 1.15W
The warnings are backed by the Chem (Chemicals Health and Environment Monitoring) Trust, a UK charity which has taken over campaigning work on toxic chemicals from the WWF (World Wildlife Fund).
Hot-rolled surface, annealed and pickled, can be used as cold-rolling material, industial tanks and chem i cal devices.