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- The synthetic progress of quaternary ammonium salt cation active bactericide is introduced, and the relation between its structure and fungicidal effectiveness is studied. 介绍了季铵盐型阳离子活性杀菌剂的合成进展,研讨了它的结构与杀菌力的关系。
- cation active high-molecular electrolyte 阳离子活性高分子电解质
- To determine potassium in inorganic sample tetrapheny lboron sodium of surfeit wasreturn-titrated by cation activator cetyltrimethylammonium bromide with methyl orange as indica-tor. 本文提出了以甲基橙为指示剂,用阳离子活性剂十六烷基三甲基溴化铵返滴定过量的四苯硼化钠测定钾。
- The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
- He is an active member of the school's stamp club. 他是学校集邮俱乐部的一名活跃会员。
- An active volcano may explode at any time. 活火山随时都有可能爆发。
- Is it wise to engage in active sports at your age? 我这样的年纪积极参加体育活动是否明智?
- She was active as a left-winger in the party. 她是党内积极的左翼分子。
- He was very active and rode down several horses. 他劲头很大,一连骑了好几匹马。
- She plays an active part in local politics. 她积极参与地方政治活动。
- The steel market will continue to be active. 钢材市场将会继续保持活跃。
- An active volcano may erupt at any time. 活火山随时可能喷发。
- He was disabled when on active service. 他在战斗中受伤致残。
- Ms. Brown is active in the party. 布朗女士在晚会上很活跃。
- The active boy was extremely distractible. 那好动的男孩极不专心。
- His lame foot disqualified him for active work. 跛脚使他无法参加积极活动。
- The sodium is removed with cation exchange resin. 钠用阳离子交换树脂来分离。
- He's very active for an elderly man. 作为老年人,他是非常活跃的。
- She is very active for an octogenarian. 她已经是八旬老人了,还很精神。
- The cation penetrates the spore. 这种阳离子能透入孢子。