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The event calculus is a theory for reasoning about action based on first-order predicate calculus.

事件演算是基于一阶谓词演算的行动推理理论。

Also, first-order predicate calculus isn't good enough anyway.

同时，从各方面来说，一阶谓词演算都不是足够好。

A legitimate expression of the predicate calculus.

一个合法的谓词演算表达式，即谓词演算语法所允许的公式。

This paper proposes a formal framework based on predicate calculus that maps object models into relational ones to construct persistent object layer.

通过使用一种基于谓词逻辑的形式化框架来匹配对象模型到关系模型以构建持久对象层。

The structure and process in PI is similarly to deduction in logic. But PI has much richer structures than predicate calculus. It is a complex of logic and psychology.

PI的结构与过程类似于逻辑中的演绎推理，但它的可取之处在于它可以提供比谓词逻辑更加丰富的结构形式，它是心理学与逻辑的综合。

In particular, the authors' original formulation of Gdel's completeness proof for the predicate calculus has been updated.

尤其是，作者们哥德尔完备性证明原制定的谓词演算已被更新。

In the predicate calculus, a connector connecting two conjunctive formulas denoted by sign ∧or∩.

在谓词演算中，一种连接二个合式公式的连接符，用符号∧或∩表示。

This has led some people who design the specification mechanisms for programming languages, or in the case of UML, for modeling languages, to include facilities from first-order predicate calculus as a language extension.

这就促使一些人在编程语言的描述机制和建模语言处理机制中加进了部分一阶谓词演算的东西，作为一种功能扩展。

Resolution-based many-sorted predicate calculus has been applied to many fields of computer science, such as knowledge representation, artificial intelligence and automatic theorem proving, software specification and verification, etc.

在前人工作的基础上，对自动推理领域的如下问题进行了研究与探索：基于归结原理的多种类谓词演算、模糊逻辑与近似推理、Web环境下的知识表示与自动推理等。

The atom ic formula is called atom for short in predicate calculus.

在谓词演算中，有时将原子公式简称为原子。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。