查询词典 mathematical model

First, the truncated right angle cone mathematical model has been built by space analysis.

用空间解析法建立了圆锥台形物体的数学模型。

It is very important to describe the performance curves of centrifugal compressor by mathematical model accurately for the automatization design and management of gas transmission trunk line.

对于输气干线的自动化设计和管理来说，用准确的数学模型描述离心压缩机的特性曲线至关重要。

The tube mill is a typical MIMO system with long time delay and time changing apparently. It has the characteristics of simple lagging, great inertia and non-linearity. The mathematical model is hard to be established and changed slowly with the elapse of time.

球磨机制粉系统是一个典型的多变量非线性时变系统，各控制量和被控量之间存在着相当严重的耦合，且球磨机具有纯滞后，大惯性的特点，数学模型难以建立且随时间缓慢变化。

A MATHEMATICAL MODEL OF TUBER SIZE DISTRIBYTION AND ITS APPLICATION

块茎大小分布的数学模型及其应用

It was proved that the mathematical model could be used to simulate the inclusion flotation in tundish.

电磁场对金属熔液中非金属纤维的定向控制金属基纤维增强型复合材料中纤维的取向对复合材料的性能有重要影响。

The mathematical model of turbofan engine transient process with thrust vectoring nozzle was established.

建立带矢量喷管的涡扇发动机动态数学模型。

The mathematical model of a turbojet engine and its control system was established.

研究了某型涡喷发动机及其控制系统的建模方法，并通过对燃油控制系统控制方程进

Turbojet engine ; main fuel control system ; rotational speed control system ; mathematical model ; simulation

涡喷发动机；主燃油系统转速控制系统；数学模型；仿真

Adopting discrete time-domain method to set up the mathematical model of high-voltage conversion circuit, and analyzing the influence of frequency, duty cycle, primary inductance, different turns ratio parameters how to affect high-voltage convertion circuit charging time.

采用离散时域方法建立高压转换电路数学模型，分析了高压转换电路频率、占空比、原边电感量以及匝比等设计参数对高压转换电路充电时间的影响，并进行了仿真和实验验证。

The forming of flank of conical twist drill was studied and mathematical model of twist drill tine was founded in order to get formula of back clearance.

研究了锥面麻花钻后刀面的成型，建立了钻尖的数学模型，由此确定了后角的计算公式。

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。