The heat resistance, heat shrinkage and limit oxygen index of the soybean protein fibers are discussed and compared with that of the wool. 同时采用各种仪器测试并简要分析了大豆蛋白纤维的耐热性、热收缩率以及极限氧指数,并与羊毛纤维进行了对比。
However, it has limited impact strength and large mold shrinkage, which greatly limit its application. 但其冲击强度较小,拉伸强度偏低,并且成型收缩率较大,这就大大限制了PP的应用。
Relatively low strength and high dry shrinkage of RAC, however, often limit the extensive application to structural occasions. 但是,再生混凝土强度较低,干缩变形较大,常常成为制约其应用于结构混凝土的瓶颈。
In order to decrease shrinkage crack stem of cement stabilized gravel by controlling the maximum of dosage, and the lower limit by controlling the dosage as much as possible to ensure stability of primary fatigue cracking does not appear. 通过控制水泥剂量上限尽可能减少水稳碎石基层的干温缩开裂,通过控制水泥剂量的下限来尽可能确保水稳基层不出现疲劳开裂。
The fast development of information technology requires integrated circuit to be greater integrated, faster functioned and lower power-consumed, which lead to continuous shrinkage of MOS and DRAM feature size and the thickness of MOS gate dielectrics ( SiO_2 ) would soon scale down to its physical limit. 日益增长的信息技术对超高集成度、高速、低功耗集成电路的需求,驱使晶体管的尺寸越来越小,随之而来的问题是作为MOS栅氧化物和DRAM电容介质的SiO2迅速减薄至物理极限。