滲碳保 的英文怎麼說

中文拼音 [shèntànbǎo]
滲碳保 英文
cement protection
  • 滲 : 動詞（液體慢慢地透過或漏出） ooze; seep
  • 碳 : 名詞[化學] （非金屬元素） carbon （c）
  • 保 : Ⅰ動詞1 （保衛; 保護） defend; protect 2 （保持） keep; preserve; maintain in good condition 3 （...
  1. With the software of simulating low - pressure vacuum carburizing process and computer control system, carburizing process parameters are controlled accurately. the minimum error of carburizing layer depth, the optimal distribution of carbon concentration in carburizing layer and the minimum distortion are insured

    均勻布置鼠籠狀加熱元件和多組滲碳氣氛噴嘴，並對滲碳參數進行精確控制，可保證零件最小的滲層深度誤差最佳的滲層碳濃度分佈。
  2. Effects of diverse environmental factors on the growth rate ( od4oo ) and nitrogenase activity ( ara ) of the strain w12 hi nitrogen - free culture were investigated in our experiments. the results implied that the strain w12 could easily adapt to different cultural conditions : it could use various carbon sources ( especially glucose, sucrose, malic acid, mannitol ), propagate quickly and fix nitrogen at a temperature range of 15 ? to 40 ? and at 25 - 35 ? for optimum, at a ph range of 4 to 8. 5, at a saline concentration range of 0. 01 % to 1. 5 % ; low nlv " concentration had little effect on its nitrogenase activity. ara could also be detected when it grow in the culture media with 5mmol / l ntv "

    W12菌株對環境因子的適應性研究：無氮培養條件下，測定溫度、碳源、酸堿度、滲透壓對w12生長及固氮能力的影響，結果表明，在15 - 40下均能生長並表達固氮酶活性，其最適生長及固氮的溫度為25 - 35 ；能利用葡萄糖、蔗糖、蘋果酸、甘露醇等多種碳源生長並固氮，當培養基中同時存在蔗糖和蘋果酸時，細菌生長和固氮活性最強；在偏酸和偏堿的條件下（ ph4 . 5 - 8 . 5 ）均能保持較強的生長勢和較高的固氮酶活性，並能通過調節自身代謝平衡並適應環境的酸、堿性變化，使培養液趨于中性：能耐受較高的滲透壓，培養液中卜、 5 naci濃度對其生長和固氮酶活性影響不大，當naci濃度升至2時，菌株的生長勢及固氮酶活性才有所下降：低濃度的鉸對其固氮酶活性影響不大，在0
  3. Heat treatment equipment enviro nment friendly controllable carbon oven

    熱處理設備：環保式可控滲碳爐
  4. The am fungus could obtain adequate carbon resources for itself, thus ensuring normal growth and metabolic activit y owing to the efflux of carbohydrate from the plasma membrane of the host root cortical cells to the interface of the symbiosis. thirdly, the structure and composition of the root cortex cellular plasma membrane kept good integrity and the leakage of carbohydrate maintained at low level when the plant obtained enough p and metabolizes normally. although enough carbohydrate was synthesized by plant, the am fungi could not obtain enough energy, resulting in inhibition of growth of the extraradical hyphae and decreased metabolic activity of the am fungi

    由此，我們認為植物磷營養狀況調控菌根真菌生長和代謝活性的機制是：當植物處于嚴重缺磷脅迫時，不能合成足夠的碳水化合物供給自身生長的需要，也不能向真菌提供額外的碳水化合物，因而菌根真菌生長受阻，代謝活性較低；當植物中度缺磷時，根皮層細胞質膜的組成和結構不完整，通透性大，碳水化合物通過質膜向外的滲漏量大，菌根真菌因而獲得充足的碳源，保證真菌正常的生長和旺盛的代謝；當植物獲得足夠的磷而使體內磷營養代謝正常時，其細胞質膜組成和結構完整，碳水化合物的滲漏量保持在較低的水平，盡管此時植物合成了足夠的碳水化合物，但菌根真菌仍不能獲得足夠的能量，導致真菌生長受阻和代謝活性降低。
  5. The researches indicate that after a heat treatment at high temperature ( 1700 ? ), the chemistry properties of the boron carbide surface are changed. the new boron carbide surface, react weaker with aluminum, thus a better infiltration can be achieved

    碳化硼預制體經高溫預燒后，碳化硼表面化學狀態發生改變，預燒后形成的碳化硼新表面與鋁的反應活性降低，從而保證在本文工藝條件下浸滲過程的順利進行。
  6. In the process of alloy melt and infiltrate the boron carbide, reaction between the boron carbide and aluminum interface occur, the key of achieving a good interface bond is the control of the reaction between the boron carbide and aluminum interface

    研究表明，在熔融鋁潤濕碳化硼預制體並向碳化硼預制體中浸滲的過程中，取得良好界面結合的關鍵是保證在預制體達到完全浸滲前不發生過度的界面反應。
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