软钢

Two is economy increase style change's unpleasant, protrude earth's surface now: Overage depend on material's output de increase, trade develop urgently awaits break through what extension increase's momentum; with developed country same profession compare with, modern manufacture service industries development's unpleasant, become our soft rib and short leg; unit's prolific energy consumption and steel products consumption's descend slowly, especially will is behind unit's prolific energy consumption's steel consume descend obviously hasten slow down in 2000; capital asset invest increase fast, producing energy expand violent.

二是经济增长方式转变不快，突出地表现在：过度依赖实物产量的增长，行业发展亟待突破外延增长的惯性；与发达国家的同行相比，现代制造服务业发展不快，成为我们的软肋和短腿；单位产出的能耗和钢材消耗下降缓慢，尤其是2000年后单位产出的能耗钢耗下降明显趋缓；固定资产投资增长过快，产能扩张过猛。

Moreover, the electromagnetic flux density and meniscus height increase in the form of chequerboard with increasing of slit number. The numerical results can exactly illuminate some experimental phenomena, and enrich the theoretical foundation of soft-contact continuous casting technology. In practice, a softcontact mold with slit number of 16 or 24 is recommended, the suggested frequency is around 20kHz, and the slit width is about 1mm.

结果表明：钢液对结晶器内的电磁场分布有很大影响；发现了磁感应强度和弯月面高度随电源频率增加而增大的频率范围、磁感应强度和弯月面高度随切缝数目增加呈&锯齿状&增大的规律；研究结果合理地解释了一些实验现象，完善了软接触结晶器电磁连铸技术的理论基础；建议在实际应用中采用分瓣数为16或24分瓣数的结晶器，电源频率应控制在20kHz左右，切缝宽度应控制在1mm左右。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。