precipitate是什么意思？

precipitate

英[prɪˈsɪpɪteɪt] 美[prɪˈsɪpɪˌtet]

• vt. 下掷，由高处抛下，使提前或突然发生，[气象] 使凝结而下降，[化]使沉淀；
• vi. [气象]凝结，[化]沉淀，倒落，一头栽下；
• adj. 仓促行进的，匆促的，轻率的，冲动行事的水蒸气，降水，突然发生的；
• n. [化]沉淀物，结果，产物；

第三人称单数：precipitates;

过去式：precipitated;

过去分词：precipitated;

现在分词：precipitating;

副词：precipitately;

例句

• The king was too precipitate in declaring war. 国王在宣战一事上过于轻率。
• Emitters on trickle system can be blocked by precipitate. 灌溉系统中的发射器会被沉积物所堵塞.
• Jackson's actions helped precipitate the sharp business panics that occurred in 1834 and 1837. 杰克逊的做法加速了1834年和1837年发生的经济恐慌.
• Clouds usually precipitate as rain or snow. 云常会凝结成雨或雪.
• A cool breeze caused a precipitate drop in the temperature. 冷风使温度急降.
• Adding sulphate to the solution will give a precipitate. 将硫酸盐加入该溶液会产生沉淀.
• Systemic use of the anti - muscarinic agents can also precipitate glaucoma in such predisposed patients. 对于有这种发病倾向的患者,全身性应用抗毒蕈碱类药物也能诱发青光眼.
• We don't want to do anything that would precipitate a downgrade. 我们不想做任何会导致评级下调的事情.
• All gravimetric measurements require some sort of crucible or dish to hold the residue or precipitate. 所有重量分析需要某种坩埚或器皿保留残渣或沉淀物.
• This precipitate dissolves in an excess of aqueous ammonia. 这个沉淀能溶解在过量的氨水中.

柯林斯高阶英汉双解学习词典释义

• VERB
  使（通常指不好的事件或形势）突然发生；加速
  If something precipitates an event or situation, usually a bad one, it causes it to happen suddenly or sooner than normal.
  例句
  The killings in Vilnius have precipitated the worst crisis yet... 维尔纽斯的几起谋杀事件导致了迄今为止最严重的危机。 A slight mistake could precipitate a disaster. 小错误可能会招致大灾难。
• ADJ-GRADED
  （行动或决定）仓猝的，贸然的，突然的
  A precipitate action or decision happens or is made more quickly or suddenly than most people think is sensible.
  例句
  I don't think we should make precipitate decisions... 我认为我们不应该贸然作出决定。 Many of our current problems have been caused by precipitate policy making in the past. 我们目前的很多问题都是由过去仓猝制定的政策导致的。

英汉词典释义

• vt.
  (突如其来地)使发生; 促成;使…突然降临;加速（坏事的发生）
  Falling sales precipitated the failure of the company. 销售额下降促使该公司倒闭。
  猛然摔下
  He lost his footing and was precipitated to the ground. 他失足摔倒在地上。
  使沉淀, 使淀析
  Water precipitates camphor from its alcoholic solution. 水能把樟脑从其酒精溶液中淀析出来。
• vi.
  沉淀, 淀析; 凝结
  Clouds usually precipitate as rain or snow. 云常会凝结成雨或雪。
• adj.
  (指行动)急促的, 迅猛的
  A cool breeze caused a precipitate drop in the temperature. 冷风使温度急降。
  (指行动)未经考虑的, 仓促的
  The king was too precipitate in declaring war. 国王在宣战一事上过于轻率。

英英词典释义

• Noun
  1. a precipitated solid substance in suspension or after settling or filtering
• Verb
  1. separate as a fine suspension of solid particles
  2. bring about abruptly;
  "The crisis precipitated by Russia's revolution"
  3. fall from clouds;
  "rain, snow and sleet were falling""Vesuvius precipitated its fiery, destructive rage on Herculaneum"
  4. fall vertically, sharply, or headlong;
  "Our economy precipitated into complete ruin"
  5. hurl or throw violently;
  "The bridge broke and precipitated the train into the river below"
• Adjective
  1. done with very great haste and without due deliberation;
  "hasty marriage seldom proveth well"- Shakespeare"hasty makeshifts take the place of planning"- Arthur Geddes"rejected what was regarded as an overhasty plan for reconversion""wondered whether they had been rather precipitate in deposing the king"

行业词典

• 冶金学： 沉淀物；
  医学： 使沉淀：使溶液中的物质以固体颗粒形式沉下来；沉淀物：由沉淀作用沉下来的物质或沉积物；在免疫学中指可溶性大分子抗原与同源抗体之间相互作用的产物(例如肺炎球菌荚膜多糖在溶液中与特异性抗血清反应所形成的抗原-抗体复合物)；急速的：急速发生的，如precipitate labor；
  机械： 脱溶物；又称“析出物”。过饱和固溶体中形成的溶质原子偏聚区(如：铝铜合金中的GP区)或化学成分及晶体结构与之不同的析出的相(如：铝铜合金人工时效时形成的CuAl2)。；