Very good speed characteristic of high speed mold closing and low pressure mold protection.
高速闭模、低压模保速度特性甚佳。
2
It is shown that the middle-lowspeed maglev vehicles used for city transportation has advantage over the wheel-rail as far as sound environment protection is conserved.
研究结果表明，中低速磁悬浮列车运行时相对于普通轮轨噪声较低，就声环境保护角度而言具有较大的优势。
3
A type of lowspeed wind tunnel used in research on forestry protection and its structure, function and principle of the design is introduced.