Taking pyromellitic dianhydride and thionyl chloride as raw key material, 2,5-bis(methoxycarbonyl)terephthaloyl chloride was synthesized.
以氯化亚矾及均苯四甲酸酐为主要原料通过酰氯法合成了对位均苯二甲酯二酰氯。
单词 | key material |
释义 |
key material
英语例句库
Taking pyromellitic dianhydride and thionyl chloride as raw key material, 2,5-bis(methoxycarbonyl)terephthaloyl chloride was synthesized. 以氯化亚矾及均苯四甲酸酐为主要原料通过酰氯法合成了对位均苯二甲酯二酰氯。
原声例句
精选英语短文 More measures will also be taken to improve the supply capacity of key raw materials and parts, and guarantee the capacity of vehicle-charging services, Xin added. 还将采取更多措施提高关键原材料和零部件的供应能力, 辛补充说,并确保车辆充电服务能力。 纽约时报 (New York Times) And the Commerce Department has stopped processing requests from auto suppliers and other manufacturing companies seeking an exemption from Mr. Trump's metal tariffs, leaving them uncertain over the price they will need to pay for key materials this year. 商务部也停止了处理汽车供应商和其他制造企业提交的寻求豁免特朗普制定的金属关税的申请,使得企业们心里对今年购买关键材料所需支付的价格没了底。 |
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