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precipitation是什么意思，precipitation怎么读

precipitation基本信息

读法：英 [prɪ,sɪpɪ"teɪʃ(ə)n] 美 [prɪ"sɪpə"teʃən]

释义：

  • n. [化学] 沉淀，[化学] 沉淀物；冰雹；坠落；鲁莽

    • 使用频率：★

    星级词汇：★

    英英释义

    Noun:

  • the quantity of water falling to earth at a specific place within a specified period of time;"the storm brought several inches of precipitation"
  • the process of forming a chemical precipitate
  • the falling to earth of any form of water (rain or snow or hail or sleet or mist)
  • the act of casting down or falling headlong from a height
  • an unexpected acceleration or hastening;"he is responsible for the precipitation of his own demise"
  • overly eager speed (and possible carelessness);"he soon regretted his haste"

    • 中英词源

    precipitation 降水，沉淀，沉积WWW.wENTiYi.COm

    来自precipitate,降水，降雪，沉积。

    precipitation (n.)
    late 15c., "a casting down" (of the evil angels from heaven), also, in alchemy "separation of a solid substance from a solution," from Middle French precipitation (15c.) and directly from Latin praecipitationem (nominative praecipitatio) "act or fact of falling headlong, haste," noun of action from past participle stem of praecipitare "fall, be hasty," from praeceps "steep" (see precipice). Meaning "sudden haste" is c. 1500. Meaning "act of falling from a height" is attested from 1610s. Meteorological sense of "rain, snow, dew, etc." is from 1670s.

    词态变化

    复数 precipitations;

    权威造句

    1. an increase in annual precipitation
    年降水量的增加

    来自《权威词典》

    2. Techniques for controlling particulates include filtering, washing, centrifugal separation, and electrostatic precipitation.
    控制颗粒污染物的技术包括过滤 、 洗涤 、 离心分离 、 静电沉降.

    来自英汉非文学 - 环境法 - 环境法

    3. Guitar"s experiments did not stimulate any practical study of the electrostatic - precipitation principle.
    吉他的试验均未能激起任何关于电收尘原理的实用性研究.

    来自辞典例句

    4. Various substances in plant extracts may cause spontaneous or non - specific precipitation.
    植物提取液中的各种物质都可能引起自发的或 非 专化性的沉淀.

    来自辞典例句

    5. Aerial photography can provide valuable information on precipitation, evapotraspiration, interception, and runoff.
    航空摄影可提供有关降水量 、 蒸发蒸腾量 、 入渗和径流量的有价值的资料.

    来自辞典例句

    近反义词

  • antecedent precipitation 前期降水量
  • precipitation gauge 量雨筒
  • thermal precipitation 加热沉淀
  • precipitation process 沉淀熔炼法,沉淀过程...
  • electric precipitation 电除尘
  • precipitation reaction 沉淀反应
  • precipitation tank 沉淀池,沉淀槽...
  • precipitation number 沉淀值
  • fractional precipitation 分段沉淀,分沉淀,分...
  • electrostatic precipitation 静电沉淀
  • precipitation rate 沉淀率
  • precipitation analysis 沉淀分析
  • artificial precipitation 人工降水
  • cyclonic precipitation 气旋降水
  • precipitation hardening 淀积硬化
  • precipitation station 雨量站
  • atmospheric precipitation 大气降水
  • frontal precipitation 锋面降水
  • chemical precipitation 化学沉淀法
  • annual precipitation 年间降水量,年雨量,...

    • 相似短语

  • abundant precipitation 过冷降水
  • displacive precipitation 推进沉淀作用
  • convective precipitation 对流降水，对流性降水
  • convergent precipitation 辐合降水
  • lime precipitation 石灰沉淀
  • gross precipitation 总降水量
  • group precipitation 组沉淀
  • gummy precipitation 胶质沉淀
  • immune precipitation 免疫沉淀反应
  • in situ precipitation 原地沉淀

    • 单词分析

    暂无,等待补充.

    记忆方法

    1. pre- "before, forth" + cipit- + -ation.
    2. 本义为：头向前、朝前倾斜。很显然这会造成不稳定，进而导致摔倒、摔下、坠落，由此引申为：猛然摔下，坠落，又由此引申为沉淀。以及由头向前而表示的那种不沉稳之意，进而引申为：轻率、鲁莽、急促。

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