step by step exchange 中文意思是什麼
step by step exchange
解釋
步進式電話交換局-
The interference caused by various amino acids and some other substances in the proteose peptone medium adsorbed in the surface of the mercury film electrode can be eliminated by using exchange of medium during the stripping step
通過使用交換介質法，較好消除了由於蛋白腖細胞生長液中各種氨基酸或其它組分吸附在汞膜表面而引起的干擾。 -
At the part of empirical study, this paper chooses 124 a - stock listed companies from stock exchange of shanghai and shenzhen as research samples, makes use of the step method to filter the 13 possible variables ( including 3 debt - paying ability indexes, 3 operating ability indexes, 4 profitability indexes and 3 cash flow indexes ) in analysis and finally sets up discrimimant models by fisher discrimimant rules with the samples " financial data. then this paper validates the stability of these models using the self - validation and cross - validation before analyzing the prediction ability of these models with outside - validation
實證研究部分主要以我國深、滬兩市124家上市公司為研究樣本，採用上市公司1998年至2001年的實際財務數據，運用逐步判別分析方法對擬進入模型的13個變量（包括3個償債能力指標、 3個經營能力指標、 4個獲利能力指標及3個現金流量指標）進行篩選，並根據fisher判別準則建立判別模型，在運用自身驗證法與互動式驗證法對模型的穩定性加以驗證后，運用外部數據驗證法對模型的預測能力進行了分析。 -
The hwtx - i gene was chemically synthesized according to its known cdna sequence, the gene was inserted into vector ppic9k which contained aoxj promotor and the sequence of a secreting signal peptide - a - factor, the cloning ppic9k / hwtx - i was constructed and confirmed by two - step pcr and dna sequence analysis, then it was transformed into host strain gs115, a his + muts cell line was screened and multicopy transformants were screened by various g418 concentrations, the multicopy transformant was named gh1. gh1 was cultivated in flasks. after 6 days of induction by 0. 5 % methanol, the supernatant was checked by 16. 5 % tricine - sds page, which showed there was a band in the position of 3. 5 - 6. 1kd, then it was isolated and desalted by ultrofiltration followed by ion exchange of cm column, after reverse phase hplc of ci8 and vacuum drying, the purified rhwtx - 1 was obtained which was proved to be correct recombinant hwtx - i by tricine sds - page, maldi - tof mass spectrometry, amino acid composition analysis, the n - terminal amino acid sequence and its biological activity, the final field of the purified rhwtx - i was about 80mg / l, accounting for 23. 6 % of it total secretory proteins
將帶有hwtx -基因的ppic9k經blgii線性化后，轉化酵母宿主菌gs115原生質體后經篩選陽性克隆並經表型鑒定為his ~ + mut ~ s酵母菌，進一步用遺傳毒素g418篩選多拷貝的轉化菌株，命名為gh1 ；將gh1甲醇酵母菌用0 . 5的甲醇誘導表達，發酵上清經90飽和度的（ nh _ 4 ） _ 2so _ 4沉澱， yw - 3 （ mwc03000 ）的超濾膜超濾，再經cm陽離子交換， c _ （ 18 ）反相hplc純化得到分子量為4kd左右的組分，其中4289 . 05的組分經質譜鑒定，氨基酸組成分析和序列測定為正確的表達產物，生物學活性表明其活性為天然毒素活性70 % ，表達量為80mg / l 。 -
So the mirror and mechanical part can be fabricated in a one - level mask step by bulk micromachning of ( 100 ) with koh etching. we can on off the light path and switch the light exchange by controlling the movement of mirror
本論文使用傳統的koh腐蝕液，利用硅材料的各向異性的特點，加工出了垂直於襯底表面的微鏡結構，利用這種微鏡結構可以完成光線的切換，實現光路的開關功能。 -
Since 1990s, e - data exchange, e - funds transfer and security certificate has been maturely step by step, especially the popularization of internet and e - commerce. the current business structure and distribution system will be changed and become the potential and active trading carrier in 21 century. e - commerce changes the traditional commodity trading concept and make the traditional taxation collection faced the new challenges
當前，以國際網際網路為媒介進行的商務活動正在全球范圍內興起， 20世紀九十年代以來，伴隨著電子數據交換，電子資金轉帳和安全認證等相關技術的日益成熟，特別是網際網路的普及，電子商務發展日益迅猛，全球電子商務即將改變現有的商業形態及其流通體系，將會成為21世紀最具潛力和活力的貿易載體，改變了傳統的實物貿易觀念，使得傳統的稅收征管面臨著新的挑戰。 -
Part : study on the intercalated copolymerization and properties of exfoliated polyacrylic acid / acryl amide / montmorillonite ( paa / am / mmt ) hybrid using cation exchange resin as cation source, the montmorillonite convert to sodium form by means of the cation exchange reaction of the montmorillonite and cation resin. the two - step intercalation method by using two different organic salts was sued in the modification of montmorillonie. its effect was much better in preparing polyacrylic acid / acrylamide / montmorillonite ( paa / am / mmt )
第三章插層共聚制備剝離型聚丙烯酸/丙烯酰胺/膨潤土納米雜化材料及其熱性能研究利用732陽離子交換樹脂對膨潤土進行鈉化，二次插層對鈉化膨潤土進行處理，溶液共聚法制備了剝離型聚丙烯酸/丙烯酰胺/膨潤土（ paa / am / mmt ）納米雜化材料。 -
Step one : by the distribution of tv programs, the media resource will exchange and establish an extensive and efficient media empire
第二步：建立一個標志著高效、高質、高服務的語言及語言相關服務知名品牌。 -
Step is and international standard which is uset to express and exchange product data by computer
Step標準是針對產品數據進行計算機可解釋的表達與交換的國際標準。 -
Applying the key technique of concurrent engineering - design for function ( dff ), design for assembly ( dfa ) and design for manufacture ( dfm ) of the method of design for " x ", the virtual design of the torque converter is accomplished in catia v5. then the model constitution and the simulation of virtual process of the torque converter is done in catia v5, including the model constitution and the simulation of 5 - aixe nc virtual process of the vane, the model constitution ( material : pvc ) of the idler pulley rapid prototyping ( rp ) and the virtual assembly and the motion simulation of the torque converter, etc. 3 - d data exchange between various cad systems is realized by using step standard. the lever of classing the character model of the torque converter is given
應用并行工程的關鍵技術之一? ?面向產品全生命周期的設計dfx中面向功能的設計dff 、面向裝配的設計dfa和面向製造的設計dfm的方法，在catiav5中完成液力變矩器虛擬設計；在catiav5中對液力變矩器進行虛擬加工建模和模擬，包括液力變矩器導輪葉片五軸數控加工刀軌建模與模擬、導輪快速成型rp建模（ pvc材料） 、液力變矩器虛擬裝配和運動模擬等；採用step標準實現多cad系統之間三維數據交換，提出液力變矩器特徵模型的分級標準並對三維模型數據進行分級管理，制定相應的權限等級以規范合作廠家的產品數據管理層次。 -
In this chapter, this paper firstly define the mechanism of short sales and the exchange of short sales, then go deep into defining the exchange master, the guest and the operating step of the short sales, then try hard to find out the realistic meaning of short sales by historical investigation
在這一章，本論文首先界定了賣空交易和賣空機制的涵義，然後深入界定了賣空交易的主體和客體的內容以及賣空交易的操作步驟，接著力圖通過對賣空交易的歷史考察找出賣空的現實意義。 -
With the continuing improvement of information globality and the incoming trend of china jointing world, the development step of homeland information technology is being larger, the computer and network application is more popular, and more new terms are gradually known by people such as electronic commercial, electronic government, network bank and network stock, etc. however, with the increase of network information exchange, the security of network data transfers becomes the most important issue, and therefore there exist various security solutions
隨著信息全球化的不斷推進和我國與世界接軌的不可阻擋的趨勢，國內的信息化步伐正在大步邁進，計算機和網際網路也在不斷的普及，電子商務、電子政務和網上銀行、網上炒股等名詞越來越為人們所熟悉。但是，隨著網上交換信息的不斷增多，網上數據的安全傳輸也成為了一個非常重要的問題，各種各樣的安全解決方案不斷涌現，目前，以數字證書作為主要安全手段的公共密鑰基礎設施是網際網路上應用較為廣泛的方案之一。
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