有chemicals吗?chemical不是不可数吗?

有chemicals吗?chemical不是不可数吗? chemicals和chemical有何差别是可数名词吗? chemicals是农药吗?还是chemical?可数还是不可数 怎么翻译Chemicals are carried in bulk in chemical carriers. 一道英文选词填空题A chemical reaction involves the change of chemicals called______ to new chemicals called ________.可选的词有：products reactants energy combustion Thermal decomposition light Famers use chemicals too much in their fields.为啥用too 牧场而不是too many,chemical不是不可数吗为用复数? There is a bottle of__in the hand of the ___teacher.A chemical;chemicalB chemistry;chemistryC chemicals;chemistryD chemicals;chemist chemical可数吗 英语翻译NOTE:The use of a central chemical storage area for locating unused chemicals is recommended for efficient use of chemicals.Chemicals that cannot be used should be placed in a staging area (temporary accumulation area).Each laboratory mus There is a new( ) lab in our school.A.chemical B.chemistry C.chemicals D.chemistry's We must keep away from some___,for they will do harm to our health.chemistry chemists chemical chemicals chemical change是“化学反应”吗? large amounts of harmful chemicals 为什么会有这样的表达方式?amounts of 不是只能跟不可数名词吗?那这里为什么可以用chemicals呢?如果不确定请勿随意回答 英语翻译The 'List of Approved Chemicals with Corresponding Brands / Manufacturers' does not specify CAS number or other recognized chemical substance identification.No such identified. 英语翻译If the inputs used in the production of chlorine chemical solutions increase in price,what happens to the supply of chlorine chemical solutions and the price level for chlorine chemicals 化工助剂(AUXILIARY CHEMICALS)是指哪些?有何用途? 英语句子“The chemical factoties are pouring waste water into the river有语法错误吗 bulk chemicals