查询词典 forward difference operator

Meanwhile, the method of how to learn macro-operator based on subgoals is also studied. Secondly, the situation of problem solving, in which there are no problem operator model and no any heuristics, is studied.

其次，作者针对无问题操作模型同时也无问题求解启发式信息的情况，研究如何利用训练例子，不断进行问题求解的试探，自动获取操作在不同状态集中的效用信息，形成问题求解的初步规划。

Firstly, the situation of problem solving, in which there is problem operator's model but no any heuristics, is studied. The utilities of operators applied in set of states can be obtained through the analysis of operator model, and the problem planning can be makeup in the form of subgoal hierarchic.

首先，作者针对有操作模型但无问题求解启发式信息的问题，研究如何通过自动分析操作模型获取操作在不同状态集中的效用，形成问题求解的初步规划，并利用初步规划的结果逐步求解相关子问题，从而获得整个问题的解。

According to the characteristics of feature extraction, in order to enhance the speed of the operator extracting, this thesis proposes a pre-extraction algorithm. And it removes the relatively low gradient pixels, in order to not participate in the next step of the extraction, so the operator can effectively improve the extraction rate.

根据特征提取的特点，为提高算子提取速度，对提取算法进行了预处理，首先剔除梯度相对较低的像素，不参与下一步的提取，这样能有效提高算子提取速度。

There are the light on the operator plane, press assistant switch, the operator can drive it easily.

操作台上设有指示灯，按钮辅助开关，司机操作方便，舒适。

In order to improve the operator's ability of distinguishing, diagnosing, and solving printing failures, a simulation printing failures learning system was established on the applying platform of a virtual printing press. Operator can learn how to distinguish the types of printing failures, to find the causes, and to solve the problems from the simulating printed products on a virtual printing press.

为了提高操作者对印刷故障的识别、诊断和排除能力，通过建立在虚拟印刷机使用平台上的印刷故障学习系统，使学习者能够在脱离物理样机的情况下，根据虚拟印刷品学习判断印刷故障的类型、产生的原因和解决方法。

Open the maintenance cabinet on the wall to see the bridge operator's phone number (555-3411). Dial 555-3411 to ask the operator for help.

打开墙上的柜子，里面有工作人员的电话，555-3411，拨通后询问操作方法，结果到关键部分全是噪音，工作人员说完就挂了，我们什么也没听到。

Supervising the telephone department is the head operator or chief operator, sometimes called the telephone supervisor.

主管话务部的人是话务班领班。

Superivising the telephone department is the head operator or chief operator, sometimes called the telephone supervisor.

主管话务部的人是话务班领班。

His grateful father, who was a trained telegraph operator, offered to teach fifteen-year-old Tom to become an operator too.

到了1862年的冬天，爱迪生已经把铁路站长能教给他的东西全部学到了手，并返回波特·休伦，成了这个城镇的电报员。

The university students＇ innovative undertaking complete handbook policy paid attention to the university students＇ innovative undertaking preferential policy recent years,for supported the university students＇ innovative undertaking,national all levels of governments have appeared many preferential policies,involved financing,starts doing business,the tax revenue,imbark training,the imbark instruction and so on many aspects.to planned starts an undertaking the university student,understood these policies,can walk the imbark first step.according to national and the shanghai municipal government＇s related stipulation,the shanghai area graduates the university graduate to start an undertaking may enjoy the free risk assessment,free policy training,the free loan guarantee and the partial taxes and fees reduces four preferential policies,includes specifically: the university graduates (including junior college,university undergraduate course,graduate student) are engaged in the individual management,gets up from the authorized management date,in 1 year exempts pays the individual operator the registration registry fee,the individual operator management fee,the economic contract demonstration text production cost and so on.in addition,if establishes the non-regular enterprise,only needs carries on the registration in the area county street,then tax-free 3 years.

大学生创业完全手册政策关注大学生创业优惠政策近年来，为支持大学生创业，国家各级山西大学生创业出台了许多优惠政策，涉及融资、开业、税收、创业培训、创业指导等诸多方面。对打算创业的大学生来说，了解这些政策，才能走好创业的第一步。根据国家和上海市政府的有关规定，上海地区应届大学毕业生创业可享受免费风险评估、免费政策培训、无偿贷款担保及部分税费减免四项优惠政策，具体包括：高校毕业生（含山西学生创业专科、大学本科、研究生）从事个体经营的，自批准经营日起，1年内免交个体户登记注册费、个体户管理费、经济合同示范文本工本费等。此外，如果成立非正规企业，只需到所在区县街道进行登记，即可免税山西大学生创业。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了