Potash
['pɒtæʃ] or ['pɑtæʃ]
解釋/意思:
(n.) The hydroxide of potassium hydrate, a hard white brittle substance, KOH, having strong caustic and alkaline properties; -- hence called also caustic potash.
(n.) The impure potassium carbonate obtained by leaching wood ashes, either as a strong solution (lye), or as a white crystalline (pearlash).
手打:弗拉德
同義詞及近義詞：
n. Potassa, protoxide of potassium.
布鲁诺錄入
解釋/意思:
n. a powerful alkali obtained from the ashes of plants—also Potass′.—n. Pot′ash-wa′ter a kind of aerated water which when of full medicinal strength contains fifteen grains of the bicarbonate of potash in each bottle—usually much less is put in.
菲力克斯校對
例句/造句/用法:
- Commercial fertilizers generally contain nitrogen, phosphorus, and potash in amounts varying with the requirements of the soil. 伯莎M.克拉克. 科學通論.
- The whitening is done by boiling the pins in a large copper kettle, which also contains layers of grained tin and a solution of argol or bitartrate of potash. 佚名. 神奇的知識之書.
- From such deposits, potash is obtained. 伯莎M.克拉克. 科學通論.
- They discovered many new substances, such as alcohol,[334] potash, nitrate of silver, corrosive sublimate, and nitric and sulphuric acid. 赫伯特·喬治·威爾斯. 世界史綱.
- Joseph Dixon, in 1854, was the first to use organic matter and bichromate of potash upon stone to produce a photo-lithograph. Edward W. Byrn. 十九世紀發明進展.
- Another probable source of potash is seaweed. 伯莎M.克拉克. 科學通論.
- Most fats contain a substance of an acid nature, and are decomposed by the action of bases such as caustic soda and caustic potash. 伯莎M.克拉克. 科學通論.
- But the amount of potash thus obtained is far too limited to supply the needs of agriculture; and to-day the main sources of potash are the vast deposits of potassium salts found in Prussia. 伯莎M.克拉克. 科學通論.
- Water cultures of buckwheat: 1, with all the food elements; 2, without potash; 3, without nitrates. 伯莎M.克拉克. 科學通論.
- Gunpowder consists of about 75 parts of saltpetre (nitrate of potash), 15 of charcoal, and 10 of sulphur, the proportions varying somewhat with the use to which it is to be applied. Edward W. Byrn. 十九世紀發明進展.
- The other important ingredient of most fertilizers is potash. 伯莎M.克拉克. 科學通論.
- The sea is a vast reservoir of potash, and seaweed, especially the giant kelp, absorbs large quantities of this potash. 伯莎M.克拉克. 科學通論.
- Plants need other foods besides nitrogen, and they exhaust the soil not only of nitrogen, but also of phosphorus and potash, since large quantities of these are necessary for plant life. 伯莎M.克拉克. 科學通論.
- Wood ashes are rich in potash and are a valuable addition to the soil. 伯莎M.克拉克. 科學通論.
- Mungo Ponton applies Bichromate of Potash in Photography. Edward W. Byrn. 十九世紀發明進展.
手打:胡里奥