例句與造句

1. The chemical components of silkworm pupa crust were analyzed , and its microstructure was characterized by using scanning electron microscope . the existing realtion of among chitin 、 protein and inorganic salt in silkworm pupa crust has been observed . the results show that the major protion of silkworm pupa chitin is in pupa crust , and it accounts for about one forth of crust weight , the out surface of pupa crust is regular polygon net vein characteristics . chitin takes honeycomb shape in chitin - protein complex and conjugated with protein . the inner space of chitin - protein complex net was filled with inorganic salts . thus the theory basis was provided for working out the process route of isolation pupa chitin
   對桑蠶蛹皮的成分、結(jié)構(gòu)進(jìn)行了化學(xué)及掃描電鏡分析，確定其含有的主要成分及含甲殼素的數(shù)量，并對其中的甲殼素、蛋白質(zhì)和無機(jī)鹽三者之間的存在方式進(jìn)行了觀察.研究結(jié)果表明，蛹體中的甲殼素與灰分主要含在蛹皮中，甲殼素占整個(gè)蛹體成分的2 . 71 % ，占蛹皮重量的25 . 5 % ，蛹皮外表面呈規(guī)整的多邊形網(wǎng)狀結(jié)構(gòu)，蛹皮中蛋白質(zhì)與蜂窩狀的甲殼素相結(jié)合，呈層狀分布，顆粒狀的無機(jī)鹽填充在甲殼素/蛋白質(zhì)復(fù)合物構(gòu)成的蜂窩狀的空隙中.這為制定提取蛹甲殼素的工藝路線提供了理論依據(jù)
2. It's difficult to find net vein in a sentence. 用net vein造句挺難的