猝發方式 的英文怎麼說
中文拼音 [cùfāfāngshì]
猝發方式
英文
burst mode-
Due to its complexity of the problem, the theories and experiment results obtained are discrepant, and some of them are even contrary one another. started from the influence by movement rules of small cavities and solid particles, the mechanisms of combined effect of cavitation and sand abrasion are study in this thesis from the aspect of the turbulent coherent structure near the wall. first, a dynamic equation is established for a single spherical bubble and single spherical sand under the non - turbulent coherent structure near the wall, and then a dynamic equation established under the turbulent coherent structure near the wall
首先從理論上推導出在典型湍流邊界層模式的非擬序結構下空泡與固體顆粒的近壁區運動方程，然後推導出湍流近壁擬序結構作用下的空泡與固體顆粒的近壁區運動方程，再將兩種不同條件下的的運動方程進行比較，指出湍流近壁區的擬序結構對空蝕與磨損的發生具有決定性的意義，即正是由於擬序猝發作用的存在，才使得空泡、沙粒對壁面的空蝕與磨損作用得以發生。Carotenoids can make chla return from excited state to ground state by direct or un - direct quenching, in order to prevent algae from photooxidation. on the other hand, it was indicated that polysaccharides have functions in resisting uv. spirulina plalensis can accumulate both cellular and extracellular polysaccharides during uv treatment, it showed highest uv resistant ability ; nanochloropsis sp also can accumulate cellular polysaccharides, while extracellular polysaccharides reduced ; the cellular polysaccharides content of phaeocystis globosa scherffel decreased and extracellular polysaccharides content did not increased markedly, showing lowest uv resistant ability
鈍頂螺旋藻和微綠球藻中在較低的uv輻射強度下類胡蘿卜素含量升高，而葉綠素a保持相對穩定，說明類胡蘿卜素可能對藻類起到一定保護作用，可能通過直接的或間接的方式猝滅激發態的葉綠素，來保障光合作用的進行；本實驗發現多糖的累積和分泌與藻體的抗uv能力有相關，鈍頂螺旋藻的細胞內和細胞外多糖分泌旺盛，其抗uv能力最強；微綠球藻體內能積累多糖，而胞外多糖分泌減少；球形棕囊藻的胞內多糖含量減少，胞外多糖含量增加也不明顯，其抗uv能力最弱。
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