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- When did the first measurement of the speed of sound take? 第一次測量聲速是在什麼時候？
- Every paragraph is a distillation of sound judgment. 每段話都是正確判斷的結晶。
- Airliners in service at present cannot fly faster than the speed of sound. 目前供使用的客運機飛行速度不能超過音速。
- Characterized by high volume and intensity. Used of sound. 大聲的以高音量和強烈為特徵的。用於聲音
- Mach two equals twice the speed of sound. 二馬赫相當於聲速的二倍。
- His distinction of sound is excellent. 他辨別聲音的能力很強。
- Our teacher has mutation of sounds suddenly. 我們的老師突然語音發生了變化。
- Wood is a poor conductor of sound. 木頭是聲音的不良導體。
- A device for measuring the speed of sound in water. 速度計，速度表用於測量聲音在水中的速度的儀器
- The percentage of sound seed is usually 2-10%. 其健壯的種子通常僅佔2-10%25。
- Characterized by harmony of sound; melodious. 悅耳的聲音和諧的；悅耳的
- Air is the common medium of sound. 空氣是聲音的普通介質。
- The attenuation amount of diffraction of this sound barrie is calculated according to the acoustics principle, the feasible remedies are put forward. 並根據聲學原理計算了該聲屏障繞射衰減量,提出了切實可行的補救措施。
- Loudness of sound may be measured. 聲音的響度可以測量。
- The plane is flying at the velocity of sound. 飛機以音速飛行。
- Diffraction of X_ ray and IR were applied for analyzing enveloping substance. 應用X_射線衍射與紅外光譜對包絡物進行了解析;
- At the risk of sounding ungrateful, I must refuse your offer. 我甘受拂逆盛情之嫌，也必須謝絕你的提議。
- The Diffraction of Flot-topped Gauss Beam Passed circular Aperture[J]. 引用該論文 屈軍;丁培宏;孟凱;崔執鳳.
- They are children of sound mind and body. 他們是身體健康的孩子。
- The speed of sound in water is about four as great as in air. 聲音在水中的速度是空氣中的四倍左右
