一种定义
四种语言
Because the presence of shadows on the working surface can irritate users and impair their concentration, lighting systems that cast few shadows should be given preference.
The profile structure takes second place to the real priority - the process.
The optimum ergonomic positioning of workpiece and tool is to be viewed as a top priority.
Nevertheless, greater efficiency is expected in this case than in the first example, where flexibility was the priority.