signal n. 1.信號,暗號;信號器。 2.動機,導(dǎo)火線 (for)。 3.預(yù)兆,征象。 call signal 【無線電】呼號。 an alarm signal 警報(器)。 an information signal 〔美國〕暴風(fēng)警報(旗)。 an international code of signals 國際通用信號。 a signal of distress =a distress signal 船只失事信號。 adj. 1.暗號的,作信號用的。 2.顯著的,非常的,優(yōu)越的。 a signal victory [defeat] 大勝[敗]。 vt.,vi. (〔英國〕 -ll-) 發(fā)信號[警報]給(人、船等);用信號[警報]通知(暴風(fēng)、危險等);用動作[手勢]示意;預(yù)示。 a signaling bomb 信號彈。
The reduction in size of components and circuits for increasing package density and reducing power dissipation and signal propagation delays 減少元件和電路的幾何尺寸,以達到增加電路的封裝密度、減少功耗和減小信號傳播延遲的目的。
Aiming at the present problems , this thesis studies the pd signal extraction of pulse current method ( pcm ) in two directions : signal propagation and interference suppression 本文針對現(xiàn)存的問題,從局放信號的傳播和干擾的抑制兩方面研究了脈沖電流法用于變壓器局部放電在線監(jiān)測。
The influences of losses in optical transmission systems on carrier optical signal propagation are studied by using the conservation law and the viral theorem of the nonlinear system in this paper 摘要文章采用非線性系統(tǒng)的守恒律和位力定理對光傳輸系統(tǒng)中損耗對載波光信號傳輸?shù)挠绊戇M行了研究。
Then critical technologies of simulation system are discussed , including frame processing structure , fh sequence generator , simulation models of path loss and multipath channel , simulation of signal propagation delay and jamming signal etc 其次,討論了仿真系統(tǒng)實現(xiàn)的關(guān)鍵技術(shù),包括幀處理結(jié)構(gòu)、跳頻序列發(fā)生器、路徑損耗與多徑信道仿真模型、信號傳播延時及干擾信號的仿真等。
Research on retrieval of gps water vapor and method of rainfall forecast are keen field which draws all attention from wide world . the dissertation is accomplished on the basis of sino - italy collaborative project - ' the integral system of flood risk programming , monitoring and real time forecasting " and the primary achievements and conclusion reached include : ( 1 ) a reasonable design has been made for gps water vapor monitoring network according to the theory of gps satellite signal propagation and vertical distribution of water vapor and local synoptic characteristic of binjiang basin , the effective area where water vapor can be detected by gps station has been determined under different cut - off angles . the conclusion has been reached that 3 ~ 4 gps receivers are enough for water vapor monitoring in binjiang basin Gps水汽反演和降雨預(yù)報研究是當(dāng)前氣象遙感應(yīng)用的一個前沿探索領(lǐng)域,本論文依托于中意科技合作項目“洪水風(fēng)險規(guī)劃、監(jiān)測和實時預(yù)報的集成系統(tǒng)” ,主要成果體現(xiàn)在以下方面: ( 1 )提出了一個合理的gps水汽監(jiān)測網(wǎng)設(shè)計方案根據(jù)gps衛(wèi)星信號傳播原理和水汽垂直分布規(guī)律以及流域天氣的地方性特征,確定了不同高度截角下一個gps站所能測定大氣水汽含量的有效范圍,得出了濱江流域只需要3 4個gps接收機就足以反映流域水汽變化的結(jié)論。