精确确定

Automatic differentiation and implicit function differentiation rule were used to calculate the precise absolute and relative sensitivity coefficients, with no truncation error introduced.

提出一种基于自动微分和隐函数求导法则的精馏塔优化计算灵敏度分析方法，可以求出精确的、无截断误差的灵敏度系数，以反映精馏塔模型中各种不确定因素变化所引起的改变和影响。

Rough Set theory is an effective approach of imprecision, vagueness and incompleteness in classification analysis and knowledge discovery.

粗糙集理论在对不精确、不确定和不完全的数据进行分类分析和知识获取中具有突出的优势。

However, in real life, information is imperfect such as uncertainty, imprecision, inconsistency and vagueness.

然而，在实际生活中，不完善信息是常见的，主要有不精确信息，不确定信息，不一致信息以及模糊信息等几种基本类型。

Rough set theory is an effective approach to imprecision, vagueness, and incompleteness in classification analysis and knowledge discovery.

粗糙集理论在对不精确、不确定和不完全的数据进行分类分析和知识获取中具有突出的优势。

Rough Set is a new mathematics theory that can deal with incertitude and incompletion data.

粗糙集理论是一种新兴的处理不精确、不确定与不完全数据的数学理论。

This age may be the lower limit of the gold ore formation, which means the mineralization time is not earlier than Indo-chinese epoch.

该年龄限定了金矿化年龄的下限，即金矿化不可能早于印支期，但并不能确定金矿化的精确年龄。

Newton precisely measured the inertial mass of a great many objects (what it took to get them moving, as in getting a pendulum started) and their gravitational mass (how fast they fell to the Earth), to determine that the two forces were equal, if not equivalent, and could be canceled out when doing physics.

牛顿精确测量了很多物体的惯性质量（使物体运动的内在动力，就像钟摆开始往复的动力）和它们的引力质量（以多快的速度向地表坠落），以此来确定这两种力是均等的，如果不均等，在做物理学运算时可能就会互相抵消。

If literature is nebulous or inexact; if it is impossible to determine, with scientific

如果文学是模糊不清且不精确的，如果不可能用科学的精确性来确定一个艺术作品的价值或者

Advanced by Z.Pawlak in 1982,the rough set theory analyzes inadequate information efficiently such as inexactitude or dissonant information.The advantage of the rough set theory is no need of any initial or extra information such as the probability dispersal of statistics and so on.

Z.Pawlak于1982年提出的Rough集理论有效地分析了不确定、不精确、不一致等各种不完备信息，其优点是无需任何关于数据的初始的或附加的信息，如统计学中的概率分布。

The initial position is determined from a precise knowledge of the location of the point of departure of the vehicle.

初始位置是根据对车辆出发点位置的精确认识来确定的。

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。