net veining中文什么意思

net: adj. 凈的，純的 (opp. gross) 無虛價的 ...
vein: n. 1.【解剖學(xué)】靜脈；〔口語〕血管。 2.【植物；植 ...
veining: 結(jié)疤；毛刺；脈狀突起; 脈狀凸起; 木材理紋; 飾以脈紋; 網(wǎng)疤; 網(wǎng)脈凸疤; 亞晶界組織; 鑄模龜裂，脈狀痕(鑄疵)
pillow veining: 枕狀脈
veining structure: 網(wǎng)絡(luò)狀亞晶界結(jié)構(gòu); 紋理組織

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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)

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