bcf 中文意思是什麼

The robotic fish model selected in this paper which consider an idealized bcf propulsive fish model that consists of only three links : the rigid body in the foreside ; the high aspect ratio caudal fin ; the caudal peduncle which connects the caudal fin and the body

機器魚的模型建立是把理想的bcf推進式魚類分為三個部分，分別是：前部剛性的身體，大展弦比的尾鰭和一個連接以上兩部分的尾頸。

Compounds with bcf values < 100 are considered to be of little environmental concern and not expected to bioconcentrate into tissues. in this in vivo test, the low uptake of avermectin b1a and its low persistence in sturgeon muscle demonstrate that it will neither bioaccumulate in individual organisms nor biomagnify in the food chain

在試驗中，鱘魚對水中的avmb _ （ 1a ）攝取率較低， avmb _ （ 1a ）在鱘魚體內消除迅速，以及avmb _ （ 1a ）較低的bcf值，表明不易在水生生物食物鏈中被生物濃縮，不易在水生生物體內富集，對環境和人類的健康影響較小。

In the recent year although bcf has seen a great increase of its profit, tax and export, it still has a long distance to go comparing with the high demand of the competitive domestic and international market in the field of the reshuffling of the product structure, the increase of the product, the renewing of the apparatus, the enlarging of the market, the innovation of management and so on

主要產品以國際流行的混合型卷煙為主，擁有多項生產技術專利。近年來，雖然北京卷煙廠的利稅、出口都有較大幅度增長，但是在產品結構調整、產量增長、設備更新、市場擴大、管理創新等方面距離國際和國內市場激烈競爭的要求還有較大差距。

Topic : when i perform a bcf, other pins get cleared in the port. why

當我執行一個bcf命令時，埠的其他管腳也被清零，為什麼？

Bcf boot catalog file

啟動目錄文件

The field surveys and lab experiments tvere designed to study the distribution and source of pah " poliution in x " ater, sediment ; the pah " concentration and distribution in marine fish organ ( of the fish lateolabimjapo ) 1iclls and pagivsonills inajor ) ; the pah " bcf factors of liver and bile in marine fish ( laleolabral jtwo ) 1itits and pag7vso ) ) ills ) ) 1ajbr ) ; the reiationship between pah " exposure and biochemicai response ( cat sod, lpo ) and the metabolic rate of naphthalene and pyrene in fish bile

4優化了魚膽汁中1 ?羥基萘和1 ?羥基芘的熒光分析方法，測定了1 ?羥基萘和1 ?羥基芘在鱸魚、真鯛膽汁中的含量，探討了萘和芘在魚膽汁中的代謝比率、清除作用。結果顯示： （ 1 ）膽汁中萘的代謝比率低，易蓄積；而芘的代謝比率高，易清除。

We suspected that c. demersum l. was inadequate used as a single bioaccumulator. while c. caroliniana a. could tolerate the higher lever of cu2 +, it is advised to be a better selection to phytoremediation. when the two submerge macrophytes were planted together in cu2 + solution, the respective bcf of copper in two plants increased and the toleration of c. demersum l. was enhanced slightly

水盾草體內富集的銅含量可以達到61 . 0mg kg ；金魚藻對銅離子的耐性很低，且葉片受到銅脅迫時容易脫落，不適合作為銅濃度高的水體的生物修復植物，水盾草對銅離子的耐性較高，適合應用於含銅水體的生物修復；金魚藻和水盾草共同培養時，植物體內對銅的積累量有所增加，金魚藻對銅的耐性也略有提高。

Boeing 747 - 400 bcf

波音改裝貨機

In the field of the phytoremediation of copper pollution, submerged macrophytes are focused less than the terrestrial plants. in this study, ceratophyllum demersum l. and cahomba caroliniana a. gray were used as the test plant. the following two aspects were investigated in vivo methods : 1 ) the toxicity effects of cu2 + on the three main antioxidant enzymes ( including cat, pod and sod ) of two submerged macrophytes were detected at different low doses and on the chronic exposure, in order to establish the dose - effect relationship and the time - effect relationship, and thereby acquire the toxicity threshold ; and 2 ) with two submerge macrophytes throng cultured individual or combined on the chronic exposure, it was found on the bcf of copper and the influence of interspecific relationships to the submerge macrophytes resistance or bioconcentration

本論文以兩種大型沉水植物金魚藻（ c . demersuml . ）和水盾草（ c . carolinianaa . ）為受試植物，從它們對水體中cu ~ （ 2 + ）的生物富集作用和動態，以及cu ~ （ 2 + ）對它們體內抗氧化酶的急性毒性效應和亞急性毒性效應兩方面進行了研究： 1 ）通過體內暴露不同劑量的cu ~ （ 2 + ） ，探討cu ~ （ 2 + ）對植物體內三種主要的抗氧化物酶（ sod ， pod ， cat ）的毒理效應，建立劑量?效應關系和時間?效應關系，以揭示沉水植物對cu ~ （ 2 + ）的抗性機制； 2 ）通過對金魚藻，水盾草單獨培養和共同培養的方式，分別研究了兩種沉水植物對cu ~ （ 2 + ）的生物富集系數及其動態以及兩種植物的種間關系對富集銅和植物耐性的影響，綜合評價了兩種植物在銅污染水體的植物修復中的應用前景。

And considerable work has been done hi the growth behaviour in the tetrachloride solution concluding studies of crystal growth and growth kinetics. a crystal of dimensions 20mm x 20mm x 1mm was produced hi the tetrachloride solution by lowing temperature. and bcf spiral growth mechanism for the surface diffusion model was analyzed using the kinetic data

本文以苯為溶劑溶液降溫法培養出了60mm 40mm 3mm大尺寸hhm單晶；另外探討了hhm在四氯化碳溶液中的生長行為，溶液降溫法培養出了20mm 20mm 1mm的較大尺寸單晶，並用動態循環體視顯微鏡觀察法測定了其在不同的過飽和下主要顯露晶面的法向生長速率，在較大過飽和度范圍內考察了其bcf表面擴散螺位錯生長機制。

This paper presents an overview of the swimming mechanisms and the caudal fin locomotion employed by fish. a practical method is brought forward that use the track of the caudal fin oscillating to study the locomotion of the robotic fish. and this paper mimic the bcf ( body and / or caudal fin ) propulsive fish with a three - link robotic fish model ( oucefish - i ) for oscillating foil propulsion, and then describes the design ( hardware and software ) of it in detail

本文對魚類的游動機理和尾鰭運動學原理進行分析，提出利用尾鰭擺動軌跡研究機器魚的運動學原理方法，設計並實現了一種三關節仿bcf （ bodyand orcaudalfin身體加尾鰭）高效推進方式機器魚模型（ oucefish - ） ，通過對機器魚的姿態、運行軌跡進行控制和分析，並對機器魚的實驗結果做了分析，達到研究分析機器魚的運動學原理的目的。

And i also give the other ways of strategic evaluation which can be used by bcf

並給出了北京卷煙廠可以利用的其它戰略評價方法。

This thesis is an analysis of the development of a particular enterprise - - - beijing cigarette factory ( bcf ) during 2002 - 2005, employing strategic management theory

本論文對煙草生產特定企業- - - - -北京卷煙廠2002 - - - 2005年的企業發展，以戰略管理理論結合實踐進行了分析。

The second section describes the morphological features and the swimming mechanisms of fish and explains the reason why this paper chooses bcf propulsive fishes as the model

在第二部分里描述了魚類游動機理和行為特徵，並對本文為何選擇bcf推進式魚類作為仿生對象作了解釋，並說明了尾鰭運動學參數和受力情況。

Finally i choose a development strategy concentrated development for bcf in the future 3 years, that is product infiltration, market exploitation and product development. and i determined the concrete annual objective of its strategic development

最後選擇了北京卷煙廠未來三年應當採取產品滲透、市場開發和產品開發並舉的密集性增長發展戰略，並制定了該廠戰略發展的具體年度目標。

In the section of strategic evaluation and control of bcf, i emphasize the fundamental skeleton of the strategic evaluation, that is at random or periodically to check the strategic basis, to measure achievements, to take actions of correcting the mistakes

在北京卷煙廠戰略評價與控制部分，我重點強調了戰略評價基本框架，即隨時或定期檢查戰略基礎、度量企業績效、及時採取糾正措施。

According to strategic management theory, in this thesis, in the section of working out the development strategy for bcf, i firstly narrate the task of the enterprise and anticipate the prospect strategically ; then through a thorough analysis of its environment, competitive factors and internal environment, i draw a conclusion : the internal environment of bcf is privileged environment, and the external environment is opportunity environment, therefore bcf should adopt a strategy of giving full play of its advantages, making full use of the opportunities, making up the defects, shunning the menaces

根據戰略管理理論，在北京卷煙廠發展戰略制定部分，我首先對北京卷煙廠進行了企業任務陳述和戰略展望。接著對其外部環境、競爭因素、內部環境進行了充分分析，並得出結論：北京卷煙廠目前的企業內部環境是優勢環境，外部環境是機會環境，因此，北京卷煙廠在選定發展戰略時應當選取發揮優勢、利用機會、彌補缺點、迴避威脅的戰略。