Meanwhile, the resin of urea and formaldehyde is used for medium-density overlay (MDO), a combination of concrete and plywood, used in concrete moulds.
同时，尿素甲醛的树脂用于制造中密度板(MDO)，这是一种混凝土和夹板的组合体，通常用于混凝土模具中。
Simulation result shows the combination agent deployment model can make overlay network routing achieve optimal performance on the basis of meeting the combined service application requirements.
实验结果表明，组合代理部署模型能在满足服务组合应用需求的基础上，使覆盖网络的路由性能达到最优。
The next opportunity is to overlay other data sources such as traffic, weather and geographical data to gain greater insight into a specific car and driver combination.
另一个机遇是用交通、天气和地理数据等信息结合汽车和司机来了解情况。
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