search:聲納 超音波相關網頁資料

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日期:2024-08-09
聲納也可以用來探測水中的暗礁、敵人的潛艇,測量海水的深度。很多動物都有完善 的發射和接收超聲波的器官。以昆蟲為食 ......
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日期:2024-08-06
Description: The XL series of MaxSonars are a super high-performance version of the easy-to-use sonar range finder from Maxbotix. The XL series of this sensor  ......
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日期:2024-08-03
All about S and P earthquake waves. GCSE Physics for students, parents and teachers. Ultrasound and SONAR Let us take a look at a typical question about SONAR and depth at sea: A ship sends a pulse of ultrasound and receives an echo 0·3 seconds later....
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日期:2024-08-03
All aspects of ulrosound or sonar examinations infemale health explained in a simple understandable manner. It's role in enstruation, period pains, abnormal bleedings, ovarian cysts and pregnancy discussed. ... SONAR EXAMINATIONS AND THEIR VALUE Sonar ....
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日期:2024-08-02
All aspects of ulrosound or sonar examinations infemale health explained in a simple understandable manner. It's role in enstruation, period pains, abnormal bleedings, ovarian cysts and pregnancy discussed. ... Ultrasound / Sonar - the word or thought bri...
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日期:2024-08-02
我們的耳朵只能分辨頻率為二十至二萬赫的聲音,頻率比人的聽頻範圍高的聲波就叫做超聲波。不同的動物可聽到的聲波頻率範圍不盡相同。狗可以聽到一些超聲波,所以狗隻訓練員可以用超聲波哨子呼喚狗兒。...
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日期:2024-08-04
超音波 所謂"超音波"就是振動速度快得使人類的耳朵都聽不見的聲音,音波振動的 速度(聲音的高度), 以每秒鐘振動的次數表示,稱之為頻率,以HZ(赫茲)表示。在工學  ......
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日期:2024-08-08
超音波是什麽? 人類的耳朵可 ... 海豚也有這種聲納,那是由一位叫麥克布賴頓的人 發現的。他爲了捕 ... 回音定位是海豚發出超音波,聲音碰到物體後反彈回來,海豚....