五五字典>英语词典>alkali翻译和用法

alkali

英 [ˈælkəlaɪ]

美 [ˈælkəlaɪ]

n.  碱

复数:alkalis 

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BNC.13261 / COCA.28494

牛津词典

    noun


    • a chemical substance that reacts with acids to form a salt and gives a solution with a pH of more than seven when it is dissolved in water

      柯林斯词典


      • Analkaliis a substance with a pH value of more than 7. Alkalis form chemical salts when they are combined with acids.

        英英释义

        noun

        • any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water
          1. bases include oxides and hydroxides of metals and ammonia
          Synonym:base
        • a mixture of soluble salts found in arid soils and some bodies of water

          双语例句

          • Properties: red powder, good heat resistance, good alkali resistance and penetration-proof.
            性能简介:红色粉末,具有良好的耐热性,耐碱性和耐渗化性。
          • Limitedly resistant to strong acid, strong alkali, strong oxidizing solution and strong solvent.
            但对强酸、强碱、强氧化液和强溶剂忍耐度有限。
          • Oat bran protein concentrate was prepared through alkali extraction and acid precipitation.
            采用碱提酸沉法制备了燕麦麸浓缩蛋白。
          • The FTIR and chemical analyses indicated lowering of hemi-cellulose content by alkali treatment of the fibers.
            FTIR光谱分析和化学分析结果表明,经碱处理的纤维中半纤维素含量降低;
          • And, in fact, this is the case for all the alkali metals.
            事实上,所有的碱金属都有这样的性质。
          • During saponification, an alkali base such as sodium hydroxide reacts with a fat.
            在皂化反应过程中,碱或者是氢氧化钠和油脂发生反应。
          • Alkali slag cement in which waterglass was chosen as an activator was studied.
            本文研究了使用水玻璃作激发剂的碱矿渣水泥。
          • Viscose manufacturing process involves the reaction of cellulose with sodium hydroxide to form an alkali cellulose.
            粘胶的生产过程包括纤维素与氢氧化钠反应形成碱纤维素的过程。
          • Cesium and organic alkali will occur with other similar reactions, but it's quite lively.
            铯和有机物也会发生同其他碱金属相类似的反应,但它比较活泼。
          • Water, acrylonitrile and the galactomannan gum are added to a reactor with an alkali metal hydroxide.
            水、丙烯腈和半乳甘露聚糖胶,同碱金属氢氧化物在一起,加入到反应器中。