机电的

Research made in this thesis is the primary but important step in developing the actual controller, but the key point is the bringing forward and the experience on a new methodology, thus can support the future work with theory and software. By doing this, we can understand and master the design steps, preselect and optimize the controllers parameters, shorten the developing time, so will absolutely has great positive effects on the diesel engine electronic control engineering.

本文的研究是开发实用的柴油机控制器的前期工作，更重要的是提出和实践了一种较为先进的设计思路，可为后续的研究提供软件和理论的支持及方法论的指导，从而进一步认识和掌握发动机控制器的设计步骤，方便地进行控制器参数的优化，缩短其开发周期，也必然对柴油机电控技术的发展起到积极的作用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。