查询词典 null

It is shown that the insensitivity conditions are equivalent to the null controllability problem of a cascade system.

不灵敏控制问题是能控性的一个分支，半线性热方程的不灵敏控制问题即可转化为一个串联系统的能控性问题。

That's because int are value types and can never be null.

这是因为int是值类型而且永远也不能为null。

VWMO Intercomparison of models for snowmelt runoff Operational Hydrology Report 23(WMO No.646), 1986,null

张勇%刘时银%丁永建中国西部冰川度日因子的空间变化特征地理学报， 2006，1

Through the economic analysis of natural resource utilization,it is believed that market is effective to solve the problem of natural resourcesustainable utilization within a generation, but it is null for the problem ofnatural resource sustainable intergeneration utilization.

首先，通过对不可再生资源和可再生资源持续利用问题的经济分析，认为市场在解决自然资源的代内持续利用问题时是有效的，但是对于解决跨代问题，尤其是可持续发展所要求的久远时限内的自然资源的持续利用问题，却是无效的。

Due to the chaos of "null distance" in Donne\'s cognition, a dynamic movement has been produced between the two poles on a horizontal axis in his texts, which led to the occurrence of subjective and textual "intermediacies". And this is the characteristic of Donne\'s intermediateness.

由于多恩认知中"零距离"的混沌，导致了其主体的"间性"和文本的"间性"的出现，令多恩文本在横向组合轴上产生事物两极间的动态运动，从而产生多恩中间性的(来源：A47BCdc论文网www.abclunwen.com)特征。

Individual SAs intracellularly injected both on the 'preferred'and 'null'side of the DSGCs showed the same degree of cofasciculation with the DSGCs.

从DSGC 偏好方向和零方向进入DSGC的单个SA树突与DSGC树突间的共成束程度也没有显著区别。

Gluskoter H J%Ruch R R%Miller W G%Cahill R A, Dreher G B, Kuhn J K Trace elements in coal- Occurrence and distribution Urbana:Illinois State Geological Survey Circular 499 , 1977,null

代世峰%艾天杰%焦方立%侯慧敏%毛鹤龄%马凤学%李宝春%辛泽时不同成因类型煤的可选性评价煤田地质与勘探， 2001，1

Nowak J Petrological coal seam accumulation model for the Zacler Formation of the Lower Siesian coal basin,Southwestern Poland 10.1144/GSL.SP.1996.109.01.20 London:The Geological Society , 1996,null

代世峰%任德贻%唐跃刚%艾天杰%周强%马凤学%李宝春乌达矿区高硫煤中菌藻类体的发现及意义 10.3321/j.issn：1000-1964.1999.01.014 中国矿业大学学报， 1999，01

Null,"Sorry, Printer Job is Empty, Print Cancelled!","Empty"

如果打印内容为空时，提示用户打印将取消

Romanov M N%Weigend S Analysis of genetic relationships between various populations of domestic and jungle fowl using microsatellite markers Poultry Science , 2001,null

高玉时%杨宁%李慧芳%王克华%童海兵我国地方鸡品种保种群微卫星多态性分析与分子标记档案的建立遗传， 2004，6

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。