grain tube 中文意思是什麼

grain tube 解釋
輸種管
  • grain : n 1 穀物，糧食〈英國叫 corn〉; 谷類植物。2 穀粒，籽粒。3 （沙、金、鹽等的）粒，顆粒，晶粒。4 些微...
  • tube : n 1 管，筒；顏料管。2 管狀地下隧道；〈口語〉（倫敦的）地下鐵道。3 【炮】炮身；【汽鍋】鍋管；【解...
  1. In seed plants it is the generative cell in the pollen grain, which divides in the pollen tube to produce two sperm cells

    在種子植物中，它是在花粉粒中的生殖細胞，可以在花粉管內分裂形成兩個精子。
  2. When a pollen grain germinates, a pollen tube pushes its way out through an aperture in the pollen grain wall, and the nuclei migrate into the tube

    生殖細胞核分裂，形成兩個僅由細胞核和細胞質構成的精子，其中一個將與卵受精，另一個則與極核融合形成胚乳核。
  3. 5. the internal ballistics and the throttling performance of 85 % h2o2 - pe hybrid rocket motor loaded with tube grain are studied. the hot firing data of two test motors have been carefully analyzed

    研究了管型藥柱的85 h _ 2o _ 2 - pe固液火箭發動機的內彈道性能和節流特性，分析了兩臺發動機的試驗結果。
  4. The other way is that take out tube grain and wash bag and tube separately ; after washing tube, airing it through leaking by cloth and then put it back to bag

    另一種方法是將管狀顆粒從布袋中倒出，布袋和管分別洗滌，管洗好後用布漏干水分晾乾裝回布袋。
  5. These researches provide us a basis for forecasting the pests in grain in earlier stage, accurately utilizing pesticides, improving the efficiency of prevention and reducing the loss of stored grain. the sound absorption properties of various types and thickness of grain are measured by means of the standing wave tube technique. the following conclusions can be drawn : for the same thickness the larger grains has a smaller sound absorption coefficient than the smaller grains

    為了有效地研究儲糧害蟲所產生聲信號在各種糧食中的傳播特性，本文採用駐波管法，對十一種不同種類糧食在不同堆積厚度情況下的吸聲性能進行了實驗研究，糧食吸聲特性與其顆粒的大小、形狀、排列方式及糧食堆積厚度等有關，存在一定的規律，得出如下結論：同一厚度下，顆粒大的糧食較顆粒小的吸聲性能差，顆粒由大到小，吸聲系數峰值頻率向低頻方向移動；球形顆粒糧食較長形顆粒吸聲性能差。
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