This article use Mn to replace Ni to make low-cost LCHA, and the effect of Mn on structure and properties of LCHA was discussed following.
本文就对以锰代镍制取低成本低碳高合金钢，以及锰元素对其组织与性能的影响作了一些探讨。
This paper discussed the flotation effect, properties and flotation feature of J - 622 collector - frothiers introduced the use and application of this reagent in industries.
探讨了J- 622捕收起泡剂的浮选效果、性能及其浮选特点，介绍了该药剂在工业上的应用情况。
The properties of imazethapyr, including effect of controlling weeds, degradation, effect of residues of imazethapyr in soil to succeeding crops and use.
本文主要报道了咪草烟的特性、除草效果、降解、对后茬作物的影响以及使用方法。
The results showed the use of PA6 upgraded the mechanical properties and thermal stability of the composite, and PA6 had obvious synergistic effect on the system.
结果表明：PA6的加入提高了该体系的力学性能和热稳定性，并对该无卤阻燃体系具有良好的协效作用。
Aim at the controlled object -boiler has nonlinear, parameters instability, and uneasy to establish mathematic model properties, so use the traditional PID control, the control effect is not good.
针对锅炉这种具有非线性、参数不稳定、难以建立精确数学模型的控制对象，采用传统的PID控制，效果不佳。
Aim at the controlled object -boiler has nonlinear, parameters instability, and uneasy to establish mathematic model properties, so use the traditional PID control, the control effect is not good.
针对锅炉这种具有非线性、参数不稳定、难以建立精确数学模型的控制对象，采用传统的PID控制，效果不佳。
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