国产网红无码精品视频,国产高清在线精品一区不卡,久久精品国产亚洲AV日韩,日本熟妇xxxx乱

現在衣服的材質有很多種，有蠶絲的、棉綸的、滌綸的等等。對于一個初學者來說是很難區分衣服纖維的材質的，今天秦川護童來教大家怎樣區分幼兒園園服是不是纖維材質的方法！
Now there are many kinds of materials for clothes, including silk, cotton, polyester and so on. For a beginner, it is difficult to distinguish the fabric of clothes. Today, Qinchuan nursing children will teach you how to distinguish whether kindergarten clothes are made of fiber!
運用燃燒法來區分：根據纖維的化學組成不同，燃燒特征也不同，從而粗略地區分出纖維的大類。
The combustion method is used to distinguish: according to the different chemical composition of fibers, the combustion characteristics are also different, so as to roughly distinguish the major categories of fibers.
一、蠶絲、毛纖維：靠近火焰：卷曲且熔;接觸火焰：卷曲，熔化，燃燒;離開火焰：緩慢燃燒有時自行熄滅;氣味：燒毛發的氣味;殘留物特征：松而脆黑色顆?；蚪固繝?。
1、 Silk and wool fibers: close to the flame: curl and melt; Contact flame: curl, melt, burn; Leave the flame: burn slowly and sometimes extinguish by itself; Smell: the smell of burning hair; Residue characteristics: loose and brittle black particles or coke.
二、滌綸纖維：靠近火焰：熔縮;接觸火焰：熔融，冒煙，緩慢燃燒;離開火焰：繼續燃燒，有時自行熄滅;氣味：特殊芳香甜味;殘留物特征：硬的黑色圓珠;
2、 Polyester fiber: close to flame: melting and shrinking; Contact with flame: melting, smoking, slow combustion; Leave the flame: continue to burn, sometimes extinguish by itself; Smell: special aromatic sweet taste; Residue characteristics: hard black round beads;

三、錦綸纖維：靠近火焰：熔縮;接觸火焰：熔融，冒煙;離開火焰：自滅;氣味：氨基味;殘留物特征：堅硬淡棕透明圓珠;
3、 Nylon fiber: close to flame: melting and shrinking; Contact with flame: melting, smoking; Leave the flame: self extinguishing; Odor: amino odor; Residue characteristics: hard light brown transparent round beads;
四、棉、麻、粘纖、銅氨纖維：靠近火焰：不縮不熔;接觸火焰：迅速燃燒;離開火焰：繼續燃燒;氣味：燒紙的氣味;殘留物特征：少量灰黑或灰白色灰燼。
4、 Cotton, hemp, viscose fiber, copper ammonia fiber: close to the flame: non shrinking and non melting; Contact with flame: rapid combustion; Leave the flame: continue to burn; Smell: smell of burning paper; Residue characteristics: a small amount of gray black or gray white ash.
以上就是為大家介紹的有關濟南幼兒園園服定做的詳細的介紹,希望對您有所幫助.如果您有什么疑問的話,歡迎聯系我們.我們將以專業的態度,為您提供服務http://www.bj-online.cn
The above is a detailed introduction about the customization of kindergarten uniforms in Jinan. I hope it will help you. If you have any questions, please contact us. We will provide services for you with a professional attitude http://www.bj-online.cn