“画面+解说”和“画面+屏幕文本”对学 习者学习效果 的差别 双向通道原则（Modality Principle）是说学习者从画面 和解说中学 习效果要比从画面和屏幕文本中学习的要好。
基于54个网页-相关网页
风险来自网络中立性原则：运营数据通道的有线和电话公司应当对所有流量一视同仁-任何人均不应逾越此线。
At risk is a principle known as network neutrality: Cable and phone companies that operate the data pipelines are supposed to treat all traffic the same — nobody is supposed to jump the line.
对负荷变化引起的扰动，以抗干扰原则设计了前馈通道，并给出了结构形式和参数设计原则。
To overcome the external disturbance caused by load variation, a feed-forward channel type and its structure parameters are designed.
说明了虚拟检测线的设置原则，以及交通道路的实际距离与象素距离的比例关系。
Virtual detection line's setting principal and the proportional relation between real distance and pixel distance is introduced.
应用推荐