far-end field 中文意思是什麼
far-end field
解釋
遠端場-
With the info era and network economy approaching, e - commerce based on the internet technology is marching into the commercial field and has made far - reaching effect on traditional retailing operation, consumption pattern and commercial link like trade, circulation and consumption etc. during the globalized e - commerce upsurge at the end of the 20th century, tiannan department, a large - scale department retailing enterprise in guangzhou, has launched its own website ( http : / / www. tiannan. com ) and made the online deals come true
隨著信息時代，網路經濟的來臨，以網際網路絡技術為基礎發展而成的電子商務正全面的、全方位的向商業流通領域滲透，對傳統的零售商業購銷調存以及交易、流通、消費等商業活動、商業結構、消費模式等都產生了深刻的影響。在二十世紀末的世界性電子商務熱潮中，廣州市大型百貨零售企業? ?天南百貨創建了自己的網站（ http / / www . tiannan . com ） ，開發了網上購物的各種基本功能，成功實現了網上購物交易業務。 -
The tuning curve of type - i phase matching of bbo opo are measured with accuracy ; the maximum conversation in total of the system is about 31 % at 615. 6 nm, and it is fitted well with the gtp formula ; in the end we compared the output linewidth and unstable cavity far field beam qua lity of the bbo opo under the condition of type - i phase matching and type - ii phase matching, it is proved that we can obtain the parametric output of linewidth less than 0. 3 nm and the beam divergence angle approaching diffraction limits by take the advantages of type - ii phase matching and unstable cavity designs
測量了該系統的轉換效率最大為31 ，並能與理論公式極好地吻合，最後比較了在類相位匹配條件下和類相位匹配條件下的bbo - opo的輸出線寬，以及非穩腔的遠場光束質量，實驗結果表明，利用類相位匹配以及非摘要穩腔設計可以獲得線寬小於0 3nlm 、光束發散角接近衍射極限的參量光輸出。
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