When furtction f is dependent on time, which is called a dynamic function, differential df is the instantaneous increment of function f in an infinitesimal time dt, i.
对于与时间有关的函数(称之为动态函数)f而言,微分df表示在无限小的时间dt内函数f的瞬时增加量,即df=f(t+dt)?f(t);2。
Take encountering time and overload needed by missile as research object, establishes the math model of proportional guide law based on increment under the condition of leading into additional increment, then analyses the influences which different proportion and increment coefficient bring to encountering time and the overload needed.
以弹目相遇时间及导弹所需法向过载为研究对象,建立了引入附加增量下的比例导引规律数学模型,分析了比例导引系数和附加增量对弹目相遇时间及导弹所需法向过载的影响,并运用Matlab语言进行仿真,仿真结果表明与传统的比例导引法相比,选择合适的附加增量不仅可以缩短弹目相遇时间,还有助于稳定导弹所需法向过载曲线的末端跳动现象。
In order to analyze main bearing-capacity factors of shallow foundation,Mohr-coulomb inside-tangent circle yield criterion and associated flow rule were adopted,the overall process of foundation from elasticity to plasticity gradually was modeled by elastoplastic FEM through step increment method.
为了对浅基础地基极限承载力的主要影响因素进行系统分析,采用关联流动的Mohr-coulomb内切圆屈服准则,通过增量加载的有限元方法,全程模拟了地基由初始的线弹性状态逐渐过渡到塑性流动的极限破坏状态的过程。
The paper first gives the statistics data on the percentage of the subsystems mass to satellite dry mass and qualitative influence of design lifetime on the subsystems,puts emphasis on quantitative analysis of the effects of design lifetime on the design parameters and mass of the subsystems,and then gives the subsystems mass,mass penalty and percent mass penalty as a function of design lifetime.
首先给出了卫星各分系统质量(mass)在整星干重中所占比例的统计数据及设计寿命对分系统的定性影响;重点定量分析了设计寿命对各分系统设计参数及质量的影响,给出诸分系统的质量、质量增加、质量增加率与设计寿命的关系曲线;最后分析并给出卫星干重及总质量与设计寿命的关系,指出设计寿命的延长是以质量增加和成本上升为代价的,应综合考虑设计寿命与成本。
a ten percent, increase
百分之十 [一成] 的增加量
gain [gather] momentum
增加动量,增加劲头,得势
The amount of nitrogen needed will increase as yield increases.
随着产量增加，需氮量也要增加。
We are long on quantity, but short on quality.
数量在增加，质量远不足。
gain experience, power, strength, weight
增加经验、 权势、 力量、 重量
The mechanism of enhancing effect of RE on carburizing process was discussed.
稀土含量再增加催渗效果不再增加。
(of taxes) adjusted so that the rate increases as the amount increases.
（指税）调整使比率随数量的增加而增加。
To increase the amount, number, or degree of.
使增加使在数量、数字或程度上增加
investment factor
投资系数（产量增加时，投资的增加倍数）
increase the amount or availability of, creating a rise in value.
增加数量或可用性使在价值上增加。
An increase in the energy of the electrons increases the probability of ionization.
增加电子能量，会增加电离几率。
increasing in quantity or value.
数量上或价值上增加的。
any substance that tends to increase the flow or urine.
增加尿液流量的物质。
The number of technical papers accelerated.
技术论文的数量增加了。
increase in amount,number or intensity
（金额、数量或强度的）增加
exercise that increases the need for oxygen.
增加氧气需要量的练习。
To increase the alcoholic content of(a beverage).
增加（饮料的）酒精含量
The nation's consumption of coal increased last year.
去年全国耗煤量增加了。