characterizing factor 中文意思是什麼

After studying the contents with " sx - 10 law " concerning the oil and gas ( o & g ) cost of the international oil company, the article has systematically analyzed and compared the sinopec and foreign oil company ' s o & g cost ' s differences, such as its classifications structures, and cost accounting etc. by analyzing the international oil company ' s common o & g cost ' s movement tendency and rule which has been outlined and showing in the recent 10 years, that is between 1991 and 2000, the article has compared and studied the differences in o & g costs between the sinopec and foreign oil company, furthermore, it has taken impersonally part the real and internal reasons in details which has resulted in the differences at home and abroad. for instance, it has concluded the reasons that contribute to the long - lasting higher production cost of the sinopec upstream in three aspects : firstly, it is due to the difference in its resource stratagem, that is, the foreign oil company can realize their o & g resource optimization by the way of resource electing and o & g assets replacement in the world market ; secondly, since most of the sinopec key oilfields have been in the middle or last development period which characterizing the " three high " ( high water containing, high yield and high lifting rate ), it has been an impersonal rule with a higher level of production cost ; finally, another factor resulting in the higher production cost lies in the execrable operating and social environment which has been facing by the domestic oil company and a great amount of non - producing payout which owes to the bad environment

本論文從美國證監會（ sec ）對國外石油公司油氣成本的《 sx4 - 10條例》的內容研究出發，系統地分析和比較了中外石油公司在油氣成本的分類、構成以及核算等方面的差異，並結合近十年來（ 1991 - 2000 ）國外石油公司油氣成本的變化趨勢和變化規律，對中外油氣成本結構和變化呈現出的差異進行了比較和研究，並就導致該差異產生的深層次原因進行了客觀翔實的剖析，文章特別指出，造成中石化上游油氣生產成本居高不下的原因有三個方面： （ 1 ）資源戰略方面，國外石油公司可以通過資源優選和資產置換來實現油氣資源的最優化選擇： （ 2 ）從開發程度上，中石化上游普遍進入以「三高」為特徵的開發階段，生產成本高是客觀規律： （ 3 ）企業面臨的惡劣經營和社會環境以及由此產生的大量非生產支出，也是構成企業生產成本較高的原因之一。

Chapter 2 : using a so - called variance matrix, we studied the propagation and the focusing characteristics of the paraxial light beams. the quantities characterizing the gross features for a paraxial optical beam, such as the beam width, the divergence, the curvature radius of the wavefront, the complex beam parameter q. and the beam quality factor, are related by using variance matrix

第二章：闡述了常數折射率介質中光束的傳輸和聚焦，建立了表徵傍軸光束總的特徵的量，如：束寬、衍射發散角、波前曲率半徑、復光束參數q與變換矩陣的關系，得到了光束質量因子和變換矩陣行列式的定量關系。