least concentration time 中文意思是什麼
least concentration time
解釋
最低濃縮時間- least : adj （little 的最高級，比較級為 less 或 lesser）1 最小的，最少的 （opp most）。2 最不重要的，地位...
- concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
- time : n 1 時，時間，時日，歲月。2 時候，時刻；期間；時節，季節；〈常pl 〉時期，年代，時代； 〈the time ...
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Variations in pressure with and without aeration in cavitation region are measured and the compressible characteristics of pressure waveforms and relation between mach number and compression ratio are analyzed ; the time - averaged pressure profiles of different air concentration in cavitation erosion region are measured, the variations of the pressure with air concentration and effects of back pressure on cavitation erosion are analyzed ; the relations between least air concentration to prevent cavitation erosion and flow velocity are proposed ; the cavitation numbers with and without aeration in cavitation region are compared
實測了空化區摻氣前後壓力的變化，分析了壓力波形的可壓縮流特徵以及馬赫數與壓縮比的關系；實測了空蝕區不同摻氣濃度的時均壓力分佈，分析了壓力隨摻氣濃度的變化及背壓對空蝕的影響；提出減免空蝕的最低摻氣濃度與流速的關系，比較了摻氣前後水流的空化數。 -
And then the sde ligands were immobilized on the spacer arms - containing paam beads by glutaraldehyde or edc to prepare the bionic adsorbents. the factors that can influence the immobilized ligand density were also studied. the optimum conditions of coupling sde ligands through its - nh to paam beads by glutaraldehyde are : the initial concentration of 5mg / ml ( 8g wet paam beads ) of sde gives more efficient results than the higher ones ; the concentration of glutaraldehyde which activated paam beads is 5 % ; ph of activation is 7. 0 ; the coupling reaction time is at least 4 hours
同時對影響sde配體固定化量的各種因素也做了初步的探討，結果如下：戊二醛固定化sde配體的最適條件為： sde配體的初始濃度為sing ml （載體用量為sg ，濕重）時，效率最高；活化載體時的ph值為7刀；戊二醛的活化濃度為5 ：偶聯時的ph值為7刀；偶聯時間不少於4小時。
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