男女精品视频_黄网站免费在线_一区二区三区精品_51ⅴ精品国产91久久久久久_国产91在线免费观看_日韩中文字幕一区二区

paraffin

英 ['p?r?f?n] 美['p?r?f?n]
  • n. 石蠟;[有化] 鏈烷烴;硬石蠟
  • vt. 用石蠟處理;涂石蠟于…

TEM8暢通詞匯

詞態(tài)變化


復數(shù):?paraffins;

助記提示


1. *pau- "few, little; small, young" => paraffin, few, poor, puerility, paucity, parvi-, foal, Paul, poco, pullet, pony, pullulate, pusillanimous, pauper, poverty, (pais (genitive paidos) "child" => ped- "child"), puerile.
2. *pau- "few, little; small, young" => few, poor, puer "child", pauper, foal, Paul, ped- "child".
3. So called because paraffin is chemically not closely related to other substances.
4. 蠟燭就是由石蠟制成的。
5. 石蠟主要是從石油中提煉出來的,故名石蠟。

中文詞源


paraffin 石蠟,煤油

來自拉丁語parum,一點點,不多,來自PIE*pau,少的,詞源同few,poor.-affin,相似,詞源同affinity,finite.來自該物質(zhì)發(fā)明者19世紀德國化學家Karl von Reichenbach根據(jù)拉丁語創(chuàng)造出來的一個詞,因石蠟與蜂蠟有一點相似而得名,后也用于指煤油。

英文詞源


paraffin
paraffin: [19] The term paraffin was coined in German around 1830 by the chemist Reichenbach. It was formed from Latin parum ‘little’ and affinis ‘related’ (source of English affinity), an allusion to the fact that paraffin is not closely related chemically to any other substance. The word is first recorded in English in 1838.
=> affinity, fine
paraffin (n.)
1838, from German Paraffin, coined c. 1830 by German chemist Karl von Reichenbach (1788-1869), who first obtained it as a waxy substance from wood tar, irregularly from Latin parum "not very, too little," probably related to parvus "little, small" (see parvi-) + affinis "associated with" (see affinity).

So called because paraffin is chemically not closely related to other substances. The liquid form (originally parafin oil) Reichenbach called eupion, but this was the standard meaning of paraffin in English by 1860.

雙語例句


1. The fire blazed up when I added paraffin.
我加了一些煤油,火就燃燒起來了.

來自《簡明英漢詞典》

2. He took the paraffin stove on a picnic and the ruddy thing wouldn't work.
他帶了那個煤油爐去野餐,但是那個該死的東西根本用不了。

來自柯林斯例句

3. Paraffin waxes are normally marketed on the basis of a melting - point test.
石臘一般按其熔點不同在市場上分類出售.

來自辭典例句

4. Paraffin has the property of dissolving grease.
石蠟具有溶解油脂的特性.

來自辭典例句

5. Paraffin , however, is not a good phlegmatizing agent.
石蠟并不是良好的鈍感劑.

來自辭典例句

主站蜘蛛池模板: 精品综合久久久 | 大陆一级毛片免费视频观看 | a中文在线视频 | 人人鲁人人莫人人爱精品 | 99re在线视频 | 精品国产一区二区三区久久影院 | 在线看一区二区 | 日韩一区二区成人 | 成人亚洲精品 | 91精品国产高清一区二区三区 | 成人在线影视 | 久久com| 日本韩国欧美在线观看 | 日日爱夜夜操 | 欧美亚洲视频 | 国产精品一区二区在线 | 一区二区视频 | 亚洲国产成人精品久久久国产成人一区 | 亚洲天堂中文字幕 | 国产主播第一页 | 黄在线免费观看 | 国产精品久久久久久久久久免费看 | 久久精品色欧美aⅴ一区二区 | 不用播放器看的av | 99reav| 亚洲精品久久久久国产 | 久久99久久99精品免视看婷婷 | 日韩中文字幕第一页 | 婷婷色网 | 在线成人免费视频 | 黄色片在线 | 午夜影院在线观看免费 | 国产小u女发育末成年 | 免费一级大片 | 亚洲国产成人精品女人 | 韩日免费视频 | 一级片在线观看 | 免费能直接在线观看黄的视频 | 日韩av黄色 | 久久在线看 | 免费在线观看毛片 |