距變率信息 的英文怎麼說
中文拼音 [jùbiànlǜxìnxī]
距變率信息
英文
range-rate information-
On the base of researching the theory of the scheme and analyzing the signal feature, it is obtained that the existence manners and character of distance information in the differential frequency signal. at the same time, a new conclusion is gained that the technology of frequency agility can decrease the constant error of system. it is also to say that frequency agility and frequency modulation fixed - distance fuze has the similar feature to random period frequency modulation fixed - distance fuze. according to the theory of address coding in the hopping - frequency communication, the paper presents the principle of selecting the frequency agility sequence which fit to the radio fuze and constructs the frequency agility sequence family based on the rs codes
在深入研究方案原理和分析信號特徵的基礎上，獲得了該體制引信差頻信號中，距離信息的存在形式和特點，得出了頻率捷變技術的引入降低了系統定距固定誤差這一新的結論，即頻率捷變調頻定距引信在定距性能上具有類似隨機周期調頻定距的特徵。本文引入跳頻通信地址編碼理論，結合無線電引信的具體特徵，提出了適用於無線電引信的頻率捷變序列的選擇原則，並構造了基於rs碼的寬間隔頻率捷變序列族。Because of the presence of the first - order sea echoes with dominant amplitude, the doppler resolution technique which based on the range - velocity transformation is needed to extract the targets information in hf radar
高頻雷達工作在擁擠的短波波段，由於絕對占優的一階海浪回波的存在，必須採用基於距離?速度譜變換的多普勒頻率分辨技術來處理雜波，以提取目標信息。Several results were concluded : firstly, the population of t. jackii was decreasing sharply and its living area was contracting, so the percentage of genetic variance among t. jackii populations was lower than that within its population ; secondly, its genetic diversity index was relatively high ; thirdly, according to its gene flow index, the population disintegration of the species could be prevented by genetic communication among populations of the species ; finally, the similar index between the populations from jiangshi nature reserve and from xufan reservoir was higher than that between the populations from jiangshi nature reserve and from xufanggeng, corresponding with the fact that it is nearer between jiangshi nature reserve and xufan reservoir than that between jiangshi nature reserve and xufanggeng
2 、長葉榧的遺傳多樣性分析，分析了多態位點百分率（ percentageofpolymorphicsites ） 、 nei氏基因多樣性指數（ nei 』 sgenediversityindex ） 、 shannon信息指數（ shannon 』 sinformationindex ） 、居群間的相似系數（ geneticsimilarityindex ）和遺傳距離（ geneticdistance ） 、遺傳變異在居群間和居群內的分佈（ thepercentageofvarianceamongandwithinpopulation ）及基因流（ geneflow ） 。結論是：分佈在群體間的遺傳變異較分佈在群體內的遺傳變異小，說明該生物的分佈范圍越來越狹小。The reason that ec can improve the competitive ability of firms lies in the fact that, the cost of firms can relatively contracted, and the firms have the competitive advantages of enlarging without boundary. the relatively contracting of firms cost means, the effect of diminishing of managerial costs can simultaneously occurred in the fields of production costs, marginal costs, and transaction costs, with the results that the barriers of competition was founded because of the higher transaction costs of provision regarding to the businessmen of productions and services, which are caused by the reduction of production costs rendered by higher productivity, and of managerial costs rendered by the effect of substitution of soft manufactory technology. the relative enlarging of the optimal bound of firms means, that the firms can share managerial costs through the effect of scale of management by the employment of ec, that the scale of firms is enlarged while the managerial costs are cut as a result of the distributing of managerial costs to every liners and proceeds of the firms, which means that the same managerial costs can be used by larger - scaled firms
電子商務之所以能提高企業競爭力，是因為企業成本相對收縮和企業的無邊界擴張競爭優勢，所謂企業成本相對收縮即邊際成本遞減，這種邊際成本遞減效應可以同時出現在生產成本、管理成本和交易成本三個領域中，電子商務通過提高勞動生產率來降低生產成本，柔性製造技術的替代效應降低了庫存管理成本，與此同時，電子商務減少企業與消費者之間的環節，縮短路徑距離而降低企業內外的交易成本，提高了企業產品和服務分銷商改變供貨方式的交易成本，使之形成企業競爭的壁壘；所謂企業最優邊界的相對擴張，是指由於規模管理效應即電子商務運用信息技術使企業以低信息成本共享管理成本，使企業總體管理成本分攤到各個管理環節和流程中，企業規模擴大而邊際管理成本逐漸下降，相同的管理成本可用於管理更大規模的企業，即隨著電子商務在企業中的應用，企業的最優邊界相對擴張了。分享友人