alkali是什么意思_alkali怎么读_中英文释义(含例句用法)

any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water;"bases include oxides and hydroxides of metals and ammonia"

a mixture of soluble salts found in arid soils and some bodies of water; detrimental to agriculture

中英词源

alkali 碱

来自阿拉伯语al-qaliy. al, 定冠词。qaliy, 灰，碱灰。

alkali: alkali: [14] English acquired alkali via Latin from Arabic al-qalīy ‘the ashes’, a derivative of the verb qalay ‘fry’. The implicit reference is to the plant saltwort (Latin name Salsola kali), which was burnt to obtain its alkaline ashes (Chaucer’s canon’s yeoman, the alchemist’s assistant, mentions it: ‘Salt tartre, alcaly, and salt preparat, And combust matieres, and coagulat’, 1386). The modern chemical sense of a compound which combines with an acid to form a salt was first used in 1813, by the chemist Sir Humphry Davy.
alkali (n.): late 14c., "soda ash," from Medieval Latin alkali, from Arabic al-qaliy "the ashes, burnt ashes" (of saltwort, a plant growing in alkaline soils), from qala "to roast in a pan." The modern chemistry sense is from 1813.

词态变化

复数 alkalis;

权威造句

1. AAR can be assorted two classifications: Alkali - Silica Reaction ( ASR ) and Alkali - Carbonate Reaction ( ACR ).: AAR主要分两类: 碱 - 硅酸反应(Alkali-Silica Reaction, 简称 ASR ) 和碱 - 碳酸盐反应 ( Alkali-CarbonateReaction,简称ACR ).

2. Alkali - aggregate reaction ( AAR ) is one of significant factors affecting durability of concrete structures.: 碱 - 集料反应 ( Alkali-Aggregate Reaction,AAR ) 是影响混凝土耐久性的重要因素.

3. The valence atom of an alkali - metal atom has two states.: 碱金属原子的价原子具有两种能态.

4. Such detergents do not yellow the wool as alkali tends to do.: 这种洗涤剂不会象碱那样使羊毛发黄.

5. All the alkali metals have a single s - electron outside a closed shell.: 所有的碱金属都在闭合壳层之外有一单个S电子.

近反义词

alkali lye 碱液

alkali disease 碱毒病,碱性病,碱病...

alkali amide 氨基碱金属

alkali soil 碱性土壤,碱土...

alkali cellulose 碱纤维素

alkali resistance 抗碱性,耐碱坚牢度...

alkali salt 碱金属盐,碱盐...

alkali feldspar 碱性长石

alkali fastness 耐碱坚牢度

white alkali 白苏打

alkali metals 碱金属

alkali purification 碱法净化

alkali blue 碱性蓝

alkali consumption 碱损耗

alkali flat 盐碱滩,碱覆盖坪...

alkali basalt 碱性玄武岩

caustic alkali 苛性碱

alkali metal 碱金属

alkali granite 碱性花岗岩

alkali reserve 碱储藏,硷储备,碱储...

相似短语

alkali blue 碱性蓝

alkali digestion 加碱消化

alkali feldspar 碱性长石

alkali resistance 抗碱性，耐碱性

alkali test 碱式法

black alkali 黑碱

alkali gabbro 碱性辉长岩

alkali bee n. (nomia melander) 黑彩带蜂

alkali boiling 【机】碱精炼

alkali free 【机】无碱的, 不含碱的

单词分析

暂无,等待补充.

记忆方法