cation是什麼意思 cation的用法 cation怎麼讀

cation

英 ['kætaɪən]美 ['kætaɪən]

n. [化學] 陽離子；[化學] 正離子

n. (Cation)人名；(英)凱申

星級詞彙:★

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中文詞源

cation 陽離子

cata-, 向下。ion, 離子，來自拉丁詞eo, 走，詞源同exit(eo過去分詞), commencement(eo現在分詞)。

英語詞源

cation (n.)

1834, from Greek kation

"going down," neuter present participle of katienai "to go down," from kata "down" (see cata-) + ienai "to go" (see ion). Proposed by the Rev. William Whewell (1794-1866), English polymath, and published by English physicist Michael Faraday.

權威例句

1. Messaging allows real-time communi-cation by keyboard with up to five people at any one time.

電子信息發送能使多至5人同時通過鍵盤進行實時交流。

2. A spokesman said: "We have no comment regarding the publi-cation of these photographs."

一位發言人說，“對於這些照片的公之於衆，我們不予置評。”

3. Cation exchange capacity generally increases with an increase in broken bonds.

通常陽離子交換量隨破裂增加而增大.

4. An increase in cation exchange capacity of the tissue should be observed.

可以觀察到植物組織中陽離子置換能力的提高.

5. The cation penetrates the spore.

這種陽離子能透入孢子.

[ cation 造句 ]