無線電話頻率 的英文怎麼說
中文拼音 [wúxiàndiànhuàbīnlǜ]
無線電話頻率
英文
radiotelephone frequency- 無 : 無Ⅰ動詞(沒有) not have; there is not; be without Ⅱ名詞1 (沒有) nothing; nil 2 (姓氏) a surn...
- 線 : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
- 電 : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
- 話 : Ⅰ名詞(說出來的能夠表達思想的聲音, 或者把這種聲音記錄下來的文字) word; talk Ⅱ動詞(說; 談) talk about; speak about
- 頻 : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
- 率 : 率名詞(比值) rate; ratio; proportion
- 無線 : wireless無線電報 wireless telegram; radiotelegram; 無線話筒 radio microphone ; 無線裝訂 unsewn binding
- 電話 : 1. (電話裝置) telephone; phone; telephone system; telephony; [美俚] horn 2. (用電話裝置傳遞的話) phone call
- 頻率 : frequency; rate
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In the past few years, there has been significant interest in digital video applications like video conferencing and video e - mailing over internet, video telephony over public switched telephone networks ( pstn ) and wireless networks, etc. by removing spatio - temporal redundancies existing in adjacent frames, motion estimation can reduce the coding bit - rate significantly
低速率視頻編碼技術已在許多領域得到了應用,如在pstn (公共電話網) 、無線網、 n - isdn (窄帶綜合業務數字網) 、 b - isdn (寬帶綜合業務數字網)上傳輸視頻會議、可視電話和無線手持終端等。As the key block of the wireless communication transmitter in rf, it is very useful in improving the output power and efficiency, lowering the loss of the supply, lowering the size and the weight, lengthening the time of communication. class e power amplifier which is suitable to amplify envelop signal is very important in modern communication system
功率放大器( pa )作為無線通信射頻發射機中不可缺少的關鍵電路,對于提高手機的功率效率、降低電源損耗、減小體積重量、延長通話時間有著舉足輕重的作用,而適用於恆包絡信號放大的e類功率放大器,更是在現代通信系統中佔有十分重要的地位。These include the well - known am, fm, shortwave and citizens bands and vhf and uhf television channels, as well as hundreds of less familiar bands that serve cellular and cordless telephones, gps trackers, air traffic control radars, security alarms, radio - controlled toys and the like [ see box on page 71 ]
這些頻率包括眾所周知的am 、 fm 、短波、民用頻帶, vhf和uhf電視頻道,以及數百個較不為人知的頻帶,供行動電話、家用無線電話、 gps追蹤系統、航空管制雷達、安全警示與無線電遙控玩具等使用(見85頁無線電頻譜) 。Replacement of high power high frequency and medium frequency radio transmitters
更換高功率高頻及中頻無線電通話器Often, this is used to make appliances appear to " talk " or wall outlets appear to be " sending radio frequency signals ", or strong radio interference will be found to emanate from a point in mid air
這常常使設備好像是在「談話」 ,或墻縫處好像在「傳送無線電頻率信號」 ,或強大的無線電干擾會被發現彷彿是來自於空中任何一處。The system offers a range of unique features that are not available from other wireless communication platforms : fast call set - up time ; excellent group communication support ; direct mode operation between radios without going through the radio infrastructure ; packet data and circuit data transfer services ; frequency economy ; and excellent security features
系統擁有少其他無線通訊平臺缺乏的獨特功能,如快速接駁通話出色的群組通訊支援通訊機之間不必經過無線電基建而以直接模式運作封包數據和電路數據傳送服務頻率便宜和優良的保安功能。分享友人