1)  coal resource
最佳耗竭
1.
Aiming at the problem of coal resource shortage per capita, and excessive exploitation as well as irrational utilization of coal, the optimum theory and sustainable utilization system was simulated theoretically and methodically based on the principles of efficiency and continuousness, and the social welfare function.
根据效率原则与可持续性原则,利用社会福利函数,从理论及方法上对煤炭资源的最佳耗竭及持续利用进行了系统模拟,并将模拟的变化趋势与近年的实际开采利用情况作了对比和分析。
2)  optimum
最佳
1.
The paper studies a method for establishing the knowledge base of the rotating parts of numerical control machines,presents a prediction method for digging data by using a user-oriented optimum knowledge quantity property reduction algorithm.
通过对数控机床旋转部件故障知识库建立方法的研究,提出了应用面向用户的知识量最佳属性约简算法的数据挖掘预测方法,进行数控机床故障的预测,并通过实例证明了实践过程的可行性。
2.
1 CC,the formula is set up between the continuous casting heats of tundish and the uses of metal band,which give out the optimal continuous casting heats of tundish and optimum number of inserting metal band in different conditions of steel species.
针对尽量提高中间包的连浇炉数,同时降低插铁板的数量,减少连铸生产成本的问题,结合宝钢一连铸实际生产的钢种情况和不同钢种对中间包的使用要求,从生产组织角度上建立了中间包连浇炉数和插铁板次数之间的理论计算关系,得出了在不同生产钢种条件下可以达到的最佳中间包连浇炉数和最佳的插铁板次数,并就插铁板对连浇炉数的影响进行了分析,同时将理论计算和实际结果进行了对比验证,就实际生产组织存在的差距进行了分析。
3)  best
最佳
1.
Study of the best fertilizer quantity of new veriety Yanshai 6 Sun-cured Tobacco;
晒红烟新品种延晒六号的最佳施肥量研究
2.
16mm is the best in five aspects: stem structure,package,low proportion of craft damage,esthetic quality and tipping quality.
16mm的切梗丝厚度,工艺质量效果最佳。
3.
The paper describes the method of determining the best turbine of wind farm,based on a example of Huanghua wind farm.
以黄骅风电场为例 ,论述了风电场最佳风力机的确定方法。
4)  optimization
最佳
1.
In this paper,the economic cybernetics model is used to study the optimization-mining period for coal resource.
为此,本文采用经济控制论模型试图探讨煤炭资源的最佳开采时期。
2.
The performance of the system using enhanced FM-EDCSK technique was evaluated in context of noise, multipath channels and the optimization M valueis was given.
提出FM-EDCSK复合混沌数字调制方式并进行系统分析,给出了系统误码率的表达式和系统误码率最小条件下1bit参考信号后连续传输信息比特(Mbit)的最佳值。
5)  Optimal
最佳
1.
About Optimal Lebesgue Function Type Sums;
关于最佳Lebesgue型和
2.
It put forward the method of choosing the optimal end-expiratory positive pressure,the newest viewpoint,and problems need to be solved during the process.
提出选择最佳呼气末正压的方法、最新观点和需要解决的问题。
3.
This article provided a calculation method to determinate the optimal temperature rise for circulating water systems.
提供了一种通过理论计算确定循环水系统最佳温升的方法。
6)  the best
最佳
1.
Study of the best topping period of new variety Yanshai 6 of Sun-cured Tobacco;
晒红烟新品种延晒六号的最佳打顶期研究
2.
Through many years teaching experience,studying and researching,the writer of this article has found the conditions for the best teaching effect,styles and methods to achieve the teaching goals,all of which makes the desire to study is maximum.
通过多年教学实践,不断探索研究,发现创造最佳教学效果的条件、模式,以促成教学目标。
参考词条
补充资料:臭氧层耗竭
分子式:
CAS号:

性质:平流层中臭氧遭到耗损而破坏臭氧层的现象。离地面10~50km平流层内集中了较多臭氧,在30km高度附近,臭氧浓度达最高值(约10×10-6mg/L左右),形成了平均厚度为3mm的臭氧层。对臭氧有耗损作用的主要是一些痕量气体,如氟氯烃、氮氧化物等。由于大量使用含氟氯或氟溴的烷烃类化合物作为制冷剂(如氟里昂)、除臭剂、喷雾剂、推进剂等,以及施用氮肥、化石燃料燃烧、超音速飞机高空飞行和核试验等,排出的氮氧化物进入平流层后,在紫外线的照射下,会形成活性基(如氯自由基和氯氧自由基等),与臭氧反应使其分解,而导致臭氧层中臭氧浓度大幅度地降低。臭氧耗竭使地面紫外线的照射增加,会诱发皮肤癌,对生态系统产生不良影响。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。