縮小透鏡 的英文怎麼說

中文拼音 [suōxiǎotòujìng]
縮小透鏡 英文
reducing glass
  • 縮 : 縮構詞成分。
  • 小 : Ⅰ形容詞1 （體積、面積、數量、強度等不大） small; little; petty; minor 2 （年紀小的; 年幼的） youn...
  • 透 : Ⅰ動詞1 （滲透; 穿透） penetrate; pass [seep] through 2 （暗地裡告訴） tell secretly; let out; lea...
  • 鏡 : Ⅰ名詞1 （鏡子） looking glass; mirror 2 （幫助視力或做光學實驗的器具） lens; glass 3 （姓氏） a s...
  • 縮小 : reduce; lessen; narrow; shrink; reduction; contraction; minification; diminution
  • 透鏡 : [物理學] lens; optical lens
  1. Just as a double convex lens enlarges, so a double concave lens reduces

    正象雙凸透鏡可以放大那樣，雙凹透鏡也可以縮小。
  2. Silylate - terminated polyurethanes with built - in hydrophilic sites were synthesized. when the polymer is dispersed in water, the silane alkoxy end - groups of the polymer undergo hydrolysis, followed by condensation to form a stable cross - linked aqueous dispersion. tem studies indicated that with more incorporation of hydrophilic sites, the particle size of the dispersion decreased. it was also found that the film property depended on the particle size when the crosslinking density in particels was much higher. the average molecular weight of the elastically effective network chain mc measured by swelling experiments shows fairly good agreement with the theoretical value of mc. it was also found that the cross - linking density of the casting film may increase during the film formation and drying process

    將硅氧烷封端的含親水基團的線性聚氨酯預聚體分散於水中，獲得穩定的聚氨酯分散體.由於硅氧基團水解、縮合，在分散體粒子內產生擴鏈交聯反應，生成了交聯水基聚氨酯分散體.透射電子顯微鏡研究表明分散體粒徑小、分佈寬.掃描電子顯微鏡研究了成膜結構及成膜性能與粒徑的關系.溶脹實驗計算獲得的兩交聯點之間的平均分子量與理論平均分子量相符.研究還發現此分散體膜在乾燥過程中可進一步交聯.膜的水溶脹及機械性能表明，此分散體具有極大的工業應用價值
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