1. Ablation performance and mechanism of 3d c c composites

  2. C. ronan, the shorter science and civilization in china : abridgement of joseph needham ' s original text, cambridge : cambridge university press, 1978, pp. 182, 171, 187

    席文: 《為什麼科學革命沒有在中國發生? ?是否沒有發生》 ,李國豪、張孟聞、曹天欽主編: 《中國科技史探索》 ,第105 ? 106頁。
  3. It has to sit in a bath of liquid helium cooled to just a fraction of a degree above absolute zero ( - 273 c ) in order to work

    為了能夠運行, 「獵人」不得不被放置在有液態氦溶液中,裏面的溫度只比絕對零度( 273 c )高一點點。
  4. A c. account current

  5. The results showed in the paddy field the bacteria were predominated, in the dry land the proportion of fungi and actinomyces was distinctly higher than the other two kinds of soil, in the woodland abundant species of basidiomycetes were found ; the natural degradation speed was low, with the degradation the number and composition of microorganisms changed regularly ; when the c / n ratio was adjusted to 25 " ? 1, the degradation remnant ratio reduced 10. 67 % than the control

    結果表明,水田以細菌為主,旱地中真菌和放線菌數量最多,林地中有大量的高等擔子菌;秸稈自然降解較慢,土壤微生物也隨著降解的進行而呈現一定的變化規律;當調節c / n比為25 : 1時,秸稈的腐解殘留率比對照組下降10 . 67 。 2