在操作

The heuristic method emploies a genetic algorithm in reducing the redundant attributes of all attributes. Besides taking fitness function as its heuristic function for its selection operation, the genetic algorithm uses the attribute\'s information entropy to construct the heuristic function for its mutate operation, and in this way it markedly elevate the convergence speed of attribute reduction.

启发式方法采用遗传算法进行属性约简，除了存在于选择操作的适应度启发函数外，还在变异操作中以信息熵为基础构造了启发函数；穷举方法基于循环队列自底向上约简，通过剪枝有效地提高了属性约简集的穷举速度。

The coronagraph has been used to block the light from the brightstar allowing the search for the dim glow of the planetHR 8799b.

通过星冕仪技术，明亮的恒星光全部被遮蔽，以便我们寻找行星HR 8799b的微弱光芒（PS：我们在Photoshop中可以做类似操作，把中央区域给全部dell后，整个图片的亮度、对比度等都会有巨大改变，继续做大幅度增加亮度、对比度操作，有近似的效果——译注）。

I have great interest to the computer operation and application,I can learn and have a good command of the operation of the experiment machine and software connecting with computer in the cutty time.

由于本人对计算机操作和应用有一定的兴趣，与计算机相连的实验机器和软件都能在极短的时间内掌握和熟练操作。

The results indicated, that the curves of hatching rate and normal diploid larva output showed a single peak, with the highest point at 3.4 τ0, corresponding to metaphase of the first mitotic division, the results were obtained irrespective of the different pre-treatment water temperatures, thus confirming the veracity of measuring heat-shock timing by τ0 and the wild applicability of this method in cyprinid and also suggesting a new way to the operations of induced gynogenesis in related fish.

结果提示了以τ0单位度量热休克处理时机的准确性以及该优化方法在鲤科鱼类雌核诱导操作中的通用性，从而为相关鱼类的雌核发育操作提供了有价值的资料。

Unsafe acts can typically be recognized as failure to de-energize electric equipment for maintenance or derepairs, intentional use of obviously defective and/or unsafe tools, or the use of tools or equipment too close to energized parts.

典型的不安全操作的例子有：在保养或维修时不断开电气设备的典型的不安全操作的例子有：电源，有意使用明显有故障和或不安全的工具，或使用的工具电源，有意使用明显有故障和或不安全的工具，或使用的工具(设备离带电部件太近。

The SBR reactor is composed of a series of SBR reactors placed in a fixed sequence but operated in intermission. The operating process of the reactor includes five stages: fill, react, settle, decant, and idle.

SBR 是由按照一定顺序间歇操作运行的 SBR 反应器组成的，反应器在处理废水时的操作过程包括五个阶段即：进水、曝气、沉淀、出水、闲置。

By making comparison between three-step method and four-step method of Gram stain,the author found that the stain progress of three-step method is simple,and is easy to hold decolor time.

对革兰氏染色三步法和四步法进行了试验比较，发现三步法染色过程操作简单，脱色时间易于掌握，便于学生操作和控制，且染色效果较好，明显提高了实验效率，值得在教学中推广使用。

The results showed that recirculation fumigation using AlP tablets dynamic deliquescence in ventilation ducts,which can be manipulated outside the warehouse,was safe,effective,economical and easy operation,and was a method of producing gas matched with phosphine circutation fumigation.

风道投药的实仓试验表明：环流熏蒸的动态潮解法安全、有效，可在仓外操作，是一种操作简便、使用经济、与环流熏蒸配套的产气方式。

The dependent power operating device is designed based on current equipment.

本文在现有接地开关操作机构基础上完成了电动操作机构的设计。

I analyze the basic access mode of temporary table, distinguish the difference between the temporary table and the base table buffering, and give an unified buffer management strategy.

复杂操作结果集的缓冲技术（我们称为CACHE技术）是针对循环执行的复杂操作而提出的，在本文的第二部分用四章的篇幅对这个问题展开研究。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。