Analyzing from biologic mechanic s character of tache playing supported power , lumbosacral muscle group is suppor ting most of the burthen , so some lumbosacral muscle , ligament and joints are al ways hurt .
生物力学特征分析,腰骶区肌群大负荷受力,常会引起腰骶部肌肉、韧带、关节的运动损伤。
Via the qualitative analysis of the friction , the scientific conclusion that burthen of netty apron to be decided by the itself flection rigid , and introduction the technical function index of the compact 's netty apron .
If the learning strategies are used efficiently by a public english learner , not only the learning efficiency can be increased on a large scale , but also the lesson burthen can be relieved to some extent and the learning condition of the learners can be greatly ameliorated .