alkali是英語單詞,具有名詞和形容詞兩種詞性,作名詞時指代鹼或作為姓氏(Alkali),作形容詞時意為“鹼性的”。化學領域特指pH值高於7的物質,與酸反應可生成鹽類化合物。其英式發音為/ˈæl.kəl.aɪ/,美式發音為/ˈæl.kəˌlɑɪ/,複數形式為alkalies或alkalis。
該詞在套用領域衍生出alkali lands(鹼地)、alkali treatment(鹼處理)、alkali metal(鹼金屬)等專業術語。其相關概念涵蓋鹼性土壤、鹼液、鹼木素等分類。化學研究中涉及鹼金屬原子、揮發性鹼等具體物質,環境科學領域涉及鹽鹼地治理問題。
詞源可追溯至14世紀晚期,源自中世紀拉丁語"alkali"及阿拉伯語"al-qaliy"(意為灰燼中的鹽鹼物質)。1813年確立現代化學含義,指天然或人造鹼性物質。派生辭彙包括alkaline(鹼性的)、alkalinity(鹼度)等。
基本介紹
- 外文名:alkali
- 詞性:名詞、形容詞
- 英式發音:[ˈælkəlaɪ]
- 美式發音:[ˈælkəlaɪ]
- 屬性:英語單詞
單詞用法
短語搭配
雙語例句
- 1Both China and many other countries around the world have large saline-alkali land.中國和世界上其他許多國家都有大片鹽鹼地。
- 2In 2017, Yuan's team successfully grew rice on the saline-alkali land in Jiangsu Province.2017年,袁的團隊在江蘇省鹽鹼地成功種植了水稻。
- 3They would turn 100 million mu of saline-alkali land into farmland in the country over the next 10 years.他們將在未來10年內把全國1億畝鹽鹼地變成農田。
- 4Three years ago, Yuan Longping led a program of planting rice in saline-alkali soil in areas, including Xinjiang and Heilongjiang.三年前,袁隆平領導了一項在新疆和黑龍江等地區的鹽鹼地種植水稻的計畫。
- 5If China could put 6.67 million hectares of saline-alkali soil into rice production, it would be very likely to increase by around 30 million tons, a huge contribution to the country.如果中國能把667萬公頃的鹽鹼地用於水稻生產,很可能會增加3000萬噸左右水稻,這是對國家的一個巨大貢獻。
- 6The optimal conditions for synthesis of alkali green 4 include the carbamide and zinc chloride as catalyst, chloranil and bichrome.合成鹼綠色4的最佳條件包括:尿素和氯化鋅作為催化劑,四氫呋喃和雙色。
- 7Most of the injuries reported so far have been alkali burns.到目前為止,大多數的傷亡報告都是由於鹼燒傷造成的。
- 8The valence atom of an alkali-metal atom has two states.鹼金屬原子的價原子具有兩種能態。
- 9Alkali lignin is an abundant, cheap and renewable resource.鹼木素是一種來源豐富、價格低廉的可再生資源。
- 10By adding baking powder this consists of an alkali and an acid, and.加入發粉(烘烤粉)。發粉由酸和鹼組成,能產生一定量的二氧化碳。
- 11The remaining oil is treated with an alkali to remove free fatty acids.剩下的油在鹼的作用下除去自由的脂肪酸。
- 12The diamond obtained merely need low concentration acid and alkali handling.得到的人造金剛石只需進行低濃度酸鹼處理。
- 13The alkali halides can be grown into large crystals of excellent transparency.鹼金屬鹵化物能生長成具有優良透明性的大晶體。
- 14People had sufficient cognition to alkali that is in cement-concrete and its harm.對水泥混凝土中存在的鹼及其危害人們已經有了較充分的認識。
- 15PC board ban and wet cement appearance and acid, alkali touch information appearance.P C板禁令和濕水泥外表和酸,鹼性資料外表觸摸。
- 16Another example is methyl orange, which is red in acids and yellow in alkali solutions.另一個例子是甲基橙,它在酸性溶液中為紅色而在鹼性溶液中為黃色。
- 17In acid and alkali resistance, submersible pumps etc widely adopted, prolong the pump life.在耐酸、耐鹼、潛水電泵等領域廣泛採用,延長水泵壽命。
- 18Anticorrosion: the material for polymer, can completely prevent acid and alkali salt of erosion.防腐:本物質為高分子聚合物,能徹底防止酸鹼鹽的侵蝕。
- 19Objective: to study the depilatory efficacy of sulphurate alkali + quicklime + alcohol solution.目的:研究硫化鹼+生石灰+酒精溶液的脫毛效果。
- 20The extremely salty, alkali lake holds little life, but its waters are a favorite spot for wading birds.其味極鹹,鹼湖保存了湖中的小生命,但其水域仍為涉水鳥所喜歡的地方。
- 21Specially, the enterprises will produce shapes of olid alkali to satisfy the different users' request.特別是將生產各種形狀的固鹼,可滿足不同用戶的要求。
- 22Nickel has a high corrosion resistance to acid and alkali, rust and heat resistance at high temperature.鎳對酸鹼有較高的耐腐蝕才能,在高溫下有防鏽和耐熱才能。
- 23The influences of curing temperature and alkali contents of cement on expansion of mortar bars are investigated.研究了養護溫度和水泥鹼含量(質量分數,下同)與矽質集料砂漿試樣膨脹的關係。
- 24So, you can see the alkali metals here: Li Be Mg all the way over here to neon and argon where you have stability.所以大家看鹼金屬及鹼土金屬:,一個電子,lithium,,one,electron,兩個,,and,then,beryllium,,magnesium,,two,electrons,所有的方法都是,讓他們達到Ne,Ar的穩定結構。

