This summer, OPS teachers who take on multigrade classes will receive special training.
这个夏天，奥马哈公立学校那些教授混合班的老师将接受一次特别的培训。
The elementary school in Missouri Valley, Iowa, will have two multigrade classes to help trim expenses.
位于衣阿华州密苏里谷（Missouri Valley）的一所小学，为了减少学校开销 ，也决定开办两个混合班。
Turner, a 23-year teaching veteran, likes the multigrade approach. She said she has seen students develop academically and socially.
作为一名具有23年教学经验的老教师，Turner非常喜欢混合班的教学模式，她说她已经看到了学生在学业和社交方面的进步 。
Use of the fourth generation multigrade oil for diesel engine can cut down the warming up hours, save energy, reduce engine wear, and so on.
多级四代机油具有良好的低温起动性能以及节能性能，使用该油品可以缩短打温时间、节约能源、减少柴油机磨损等。
Software subdivision and "virtual frequency conversion" technology were adopted in this solution, which realized multigrade, adaptive subdivided drive in operation of stepping motor.
该方法采用软件细分、“虚拟变频”技术，实现了步进电动机多档位、带电自适应细分驱动。
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