The natural leather, locating under the epidermis, between epidermis and hypodermis , is an important part of raw hide.

真皮則位于表皮之下XNXX黄色小视频，介于表皮與皮下組織之間，是生皮的主要部分色色的免费视频。

The fogged value before fatliquoring depended on the types of raw hide and skins, beamhouse and tanning method, and its value had some influence on the fogged property of finished fur, but did not impact the sequence of fog property for fatliqouring agent.

加脂前毛皮霧化值的高低取決于原料皮的種類人人舔人人爱人人操、鞣前準(zhǔn)備和鞣制方法，其值的大小對(duì)毛皮成品的霧化性能有一定影響中文字幕日韩精品欧美一区口，但并不影響加脂劑對(duì)毛皮霧化性能的影響次序全色黄大色大片免费久久老太。

The leather manufacture process is separated into five stages,including raw hide preservation,beamhouse,tanning,post-tanning treatment and finish,from raw hide to leather.

制革生產(chǎn)過程可分為：原皮保存、準(zhǔn)備工段操人妻就是爽91视频、鞣制草久久、鞣后處理和涂飾五個(gè)部分。

BRIDGE You know its leather when we ride Wood grain and raw hide Doing what we do, watching twins getting high Gurl you keep it so fly with you sweet hunnybuns You was there when the money was gone You'll be there when the money comes You know its leather when we ride Wood grain and raw hide Doing what we do, watching twins getting high Gurl you keep it so fly with you sweet hunnybuns You was there when the money was gone You'll be there when the money comes fa real though

橋梁 您知道它的皮革當(dāng)我們乘坐木五谷和未加工皮做什么我們做人人99，觀看孿生得到您保留它的高的Gurl 因此飛行與您甜hunnybuns 您那里在金錢去您將是那里金錢來您知道它的皮革當(dāng)我們乘坐木五谷和未加工皮做什么我們做日韩人人操人人操，觀看孿生得到您保留它的高的Gurl 因此飛行與您甜hunnybuns 您那里在金錢去您將是那里金錢來fa 真正雖則

Baby Bash You know its leather when we ride Wood grain and raw hide Doing what we do, watching screens getting high Gurl you keep it so fly with you sweet hunnybuns You was there when the money was gone You'll be there when the money comes Off top I can't lie I love to get blowed You my lil'sugar, I'm yo little chulo And every time we kick it it's off to the groovy Treat you like my sticky ickey or my sweet ooey gooey fa real though

嬰孩打擊您知道它的皮革當(dāng)我們乘坐木五谷和未加工皮做什么我們做，觀看篩選得到您保留它的高的Gurl 因此飛行與您甜hunnybuns 您那里在金錢去您將是那里金錢結(jié)束我無(wú)法說謊I 愛得到blowed 您我lil'sugar 的上面欧美性爱日韩性爱，我是yo 少許chulo 并且在我們踢它時(shí)候它關(guān)閉對(duì)您喜歡我稠粘的ickey 或我的甜ooey 黏的時(shí)髦款待fa 真正雖則

Hair removed from the raw hide through the process of Unhairing can be resolve into protein by chemical methods.

在皮革工業(yè)過程中91精彩在线，從原料皮上脫下來的毛發(fā)可以用化學(xué)方法把它們分解成角蛋白。

The reaction mechanism of tetrakis hydroxymethyl phosphonium chloride and raw collagen were researched by the simulated materials of collagen including glycin,ethylenediamine and hide powder.

通過研究四羥甲基氯化鏻與皮膠原模擬物反應(yīng)国内精品三级三级精品二区，間接證明THPC主要與膠原蛋白的氨基結(jié)合高清无码DVD，可與氨基以n∶n=1∶2.2形成交聯(lián)，THPC與羥基和酰胺基均有少量結(jié)合最爽高潮午夜视频，并在pH=8.0時(shí)結(jié)合量最高欧洲免费A片在线观看。

The main raw materials used today are pigskins, cattle bones and cattle hide. Of these, the most common source is pigskins.

目前，豬皮欧美老人牲交免费一级A片、小牛骨和小牛皮是主要使用的原料欧美最黄片αⅴ视频，其中豬皮是最常見的來源。