pneumatic是什麼意思 pneumatic的用法 pneumatic怎麼讀
pneumatic
英 [njuː'mætɪk]美 [numætɪk]
adj. 氣動的；充氣的；有氣胎的
n. 氣胎
星級詞彙:★
中文詞源
pneumatic 氣動的，風動的
來自希臘語pneuma,空氣，風，呼吸，來自pnein,吹動，呼吸，來自PIE*pneu,呼吸，擬聲詞。
英語詞源
pneumatic
pneumatic: [17] Pneumatic denotes etymologically ‘of the wind or breath’. It comes via Latin pneumaticus from Greek pneumatikós, a derivative of pneuma ‘wind, breath’ (which is distantly related to English sneeze). Despite its similarity, pneumonia [17] does not come ultimately from the same source. It goes back to Greek pleúmōn ‘lung’, a relative of Latin pulmō (source of English pulmonary), which was altered to pneumōn under the influence of pneuma. From this was derived pneumoníā, acquired by English via Latin pneumonia.
=> pneumonia, pulmonary
pneumatic (adj.)
1650s, from Latin pneumaticus "of the wind, belonging to the air," from Greek pneumatikos "of wind or air" (which is attested mainly as "of spirit, spiritual"), from pneuma (genitive pneumatos) "the wind," also "breath" (see pneuma). Earlier was pneumatical (c. 1600).
權威例句
1. This pneumatic tool will double the speed of assembly.
這個氣動工具可以把裝配速度提高一倍.
2. Much of their study and revision was done to the thud of hammers and pneumatic drills.
他們學習和複習時大多都伴着錘子和風鑽沉悶的敲擊聲。
3. Light kernels may be removed by a pneumatic or air seperator.
輕的籽粒可以通過空氣動力,即氣流分選機清理出來.
4. Experiments in pneumatic conveying show that there exists a maximum particle concentration.
氣力輸送實驗表明,這裏存着一個最大的顆粒濃度.
5. We replaced hand picks with pneumatic picks and electric drills.
我們把手鎬換成風鎬和電鑽.
[ pneumatic 造句 ]
