The study examined the effect of the target direction, size and distance on the mouse operation of pointing and dragging in a GUI environment.
本研究探讨GUI环境中目标的方向、大小和距离对鼠标指点定位和拖动操作的影响。
Study was made on the effect of the various kinds of grinding media (steel jar and porcelain ball or iron jar and iron ball) on the flotation of pyrrhotite grinded in a nitrogen environment.
研究了氮气磨矿环境下不同的磨矿介质(钢罐瓷球、铁罐铁球)对磁黄铁矿浮选的影响。
Objective To study effect of family environment on children with poor academic achievement.
目的探讨家庭心理环境对学习不良儿童的影响。
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