查询词典 null function

Chen J Edge effects:microclimatic pattern and biological responses in old-growth Douglas-fir forests Seattle,WA,USA:University of Washington:, 1991,null

马友鑫%刘玉洪%张克映西双版纳热带雨林片断小气候边缘效应的初步研究植物生态学报， 1998，3

Ismail BS%Mah LS Effects of Mikania micrantha H.B.K.on germination and growth of weed species Plant and Soil , 1993,null

淮虎银%金银根%张彪%崔月花%高红明%吴晓霞外来植物空心莲子草分布的生境多样性及其特征杂草科学， 2003，1

Ingram J%Bartels D The molecula basic of dehydration tolerance in plants 10.1146/annurev.arplant.47.1.377 Annu Rev plant physiol plant Mol Biol , 1996,null

余芳%左德远%孙大业愈伤组织形成过程中钙离子与激素诱导效应的关系实验生物学报， 1991，4

Although it is possible to have variables and values whose compile-time types are abstract, such variables and values will necessarily either be null or contain references to instances of nonabstract classes derived from the abstract types

尽管可以变量和值在编译时的类型是抽象的，但这些变量和值必须要么为null，要么存储继承自抽象类型的非抽象类的实例的引用。

Null coalescing operator to learn a useful tip/trick on how to work with nullable types that are passed as arguments like this.

关于 nullable 类型的使用请阅读我的另一篇相关文章。

Columns not marked as nullable will automatically raise exceptions if you attempt to persist an instance with a null value.

如果你试图对没有被标为可空的列赋空值，将会自动抛出异常。

In this paper, the functions and the fashions of regularization are discussed when traveltime tomography is reduced to the solution of linear equation system, the functions of regularization include: constraint components which are underdetermined or lie in null space using overdetermined components and all kinds of known information; treat the uneven coverage of rays and the inaccurate datas by damping.

反射地震走时层析最终可归结为线性方程组的求解，本文讨论了在线性方程组求解过程中正则化的作用和方式。正则化的作用有：(1)用超定分量约束欠定分量和零空间分量；(2)用先验信息约束欠定分量和零空间分量；(3)对射线的不均匀覆盖进行阻尼；(4)对数据的不准确性进行阻尼。

Calder J H%Gibling M R The Euramerican Coal Province: controls on Late Palazoic peat accumulation 10.1016/0031-0182(94)90002-7 Palaeogeography,Palaeoclimatology,Palaeoecology , 1994,null

彭苏萍%张建华乌达矿区含煤地层沉积环境及其对矿山开采的影响北京：煤炭工业出版社， 1996，null

We determine and decree that the prelates of France, chapters of churches and monasteries, and laymen favouring them, of whatever rank they may be, even royal, who approve or falsely use the said sanction, together with each and every other person thinking, either individually or in a group, that this sanction is to his advantage, be warned and cited, within a definite adequate term to be established, by a public edict -- which is to be fixed on the doors of the churches of Milan, Asti and Pavia, since a safe approach to France is not available -- that they are to appear before us and the aforesaid council and declare the reasons why the said sanction and its corrupting effect and misuse in matters concerning the authority, dignity and unity of the Roman church and the apostolic see, and the violation of sacred canons and of ecclesiastical freedom, ought not to be declared and judged null and void and be abrogated, and why those so warned and cited should not be restrained and held as if they had been warned and cited in person.

我们决定和命令，主教的法国，各章的教堂和修道院，并有利於这些外行人，无论职级，他们可能是，即使王室，谁批准或虚假地表示，制裁的使用，以及每一个其他人的思维，要么单独或在一组，这一制裁是自己的优势，给予警告，并指出，在充分肯定长期设立，由一个公共的法令-这是被固定在门教堂米兰，阿斯蒂和帕维亚，因为安全的办法，法国无法使用-他们是摆在我们面前出现的上述理事会，并宣布的原因说，制裁和其腐蚀作用和滥用有关的事项的权力，尊严和团结的罗马教会和使徒见，侵犯神圣的信条和宗教的自由，不应该被宣布和判断无效的，应予废除，为什麼这些所谓警告，并提到不应当加以限制和举行，好像他们已经警告和中提到的人。

Hu SY The metnsequoia flora and its phytogeographic singnificance Journal of Arnold Arboretum , 1980,null

李珊%蔡宇良%徐莉%赵桂仿云南金钱槭果实、种子形态分化研究云南植物研究， 2003，05

A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。