Ergonomics definition

Ergonomics is a factor in the study o艺术艺术f human anatomy, physiology and飘雪TV psychology in a certain working environ飘雪直播ment. It studies the interaction between human a丁香花动漫nd machine and the environment, and studies 好姑娘影院on how to consider the problems of wor国语好姑娘k efficiency, human health, safety and comfort du国语影院ring work, life and vacation.

Standard - seat high standard

Seat height standard: to avoid exces国语飘雪sive pressure on the thigh, the heigh姐姐姐姐t of the front seat to the ground or foot should 在线飘雪not be greater than the distance from视频MV the foot to the thigh bend. According to丁香花在线 the study, the suitable seat height should b大地国语e equal to the heel of the leg plus the he影院视频el of 25-35mm and the rest of the 10-20mm, 直播大地that is, the seat height = the leg plus th影院姑娘e high and the heel thick - the proGO美丽per space.

The national standard stipulates that the TV直播chair height is: the seat height is =400~440免费TVmm, the seat height 400~440mm is中文版资源 only applicable to the adult standard. Therefor资源动漫e, the Institute of Ergonomics applic资源飘雪ation is the research object of the height / he中文版影院ight of 4~17 years old children in高清版飘雪 China. After a large number of高清国语 data research, investigation and compariso好姑娘大地n, it is concluded that the most suitable for视频姑娘 China's children's seat is in the 高清视频270~520mm. To meet the needs of 4影院中文版~17 years old children. )

Standard - seat high standard

Seat height standard: to avoid 高清版TVexcessive pressure on the thigh, the height在线飘雪 of the front seat to the ground or foot sh国语姑娘ould not be greater than the distance from the fo丁香花好姑娘ot to the thigh bend. According to the st姐姐美丽udy, the suitable seat height should 视频影院be equal to the heel of the leg pl艺术免费us the heel of 25-35mm and the rest o姑娘TVf the 10-20mm, that is, the sea丁香花直播t height = the leg plus the high and 影院视频the heel thick - the proper space.

The national standard stipulates that the c资源艺术hair height is: the seat height is =400动漫高清~440mm, the seat height 400~440mm i国语在线s only applicable to the adult stan姐姐美丽dard. Therefore, the Institute of Ergono在线大地mics application is the research ob国语艺术ject of the height / height of 4~17 years old GO飘雪children in China. After a lar免费影院ge number of data research, investigation a影院飘雪nd comparison, it is concluded that the mo大地姐姐st suitable for China's childreTV好姑娘n's seat is in the 270~520飘雪在线mm. To meet the needs of 4~17 year中文版GOs old children. )

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