查询词典 null

Beckman P M Cultural techniques and conditions influcncing growth and sporulation of Cercospora zeae-maydis and lesion development in corn leaves Phytopathology , 1983,null

丛斌%杨长城%杨思咸%李玉清%文华%刘伟%羿远启%傅波%陈岗辽宁省春玉米区主要病虫害综合防治技术体系的建立、发展与展望沈阳农业大学学报， 2000，5

Kohmoto K%Otani H%Tsuge T Isolation and biological activities of two host specific toxins from the tangerine patho-type of Alternaria alternata 10.1094/Phyto-83-495 Phytopathology , 1995,null

黄忠良%曹洪麟%梁晓东%叶万辉%冯惠玲%蔡楚雄不同生境和森林内薇甘菊的生存与危害状况热带亚热带植物学报， 2000，2

Obayashi S Multidisciplinary design optimization of aircraft wing planform based on evolutionary algorithms San Diego , 1998,null

余雄庆 多学科设计优化算法及其在飞机设计中的应用研究南京：南京航空航天大学， 1999，null

As far as I know there are three kinds fo such tests commonly exist - the Dall Null test which uses a single plano-convex lens, an auto-collimating test uses a flat as big as the mirror under test and Offner test using two plano convex lens.

据我所知现时一般存有3种此类测试，其一是达耳零位测试采用单一只平凸透镜，再有是自准直测试采用一块平镜大小一如被测试的反射镜，及 Offner 测试采用2只平凸透镜。

Dobson G M B Origin and distribution of the polyatomic molecules in the atmosphere Proceeding of Royal Society of London , 1956,null

陈文%黄荣辉准定常行星波对大气中臭氧输运的动力作用大气科学， 1995，5

The null result was directly related to a central postulate of the theory.

零结果都直接与理论的中心假设相联系。

With regard to acts, the law obliges the individual either to perform or to omit certain acts; hence the distinction into "affirmative or preceptive" laws and "negative or prohibitory" laws; at times it is forced to allow certain things to be done, and we have "permissive" laws or laws of forbearance; finally, the law in addition to forbidding a given act may render it, if performed, null and void; these are "irritant" laws.

对於行为时，法律规定，无论是个人表演，或省略某些行为，因此，区分到"扶持或preceptive "法和"负面或禁止性"的法律；有时，它是被迫允许某些事情要去做，我们的"通融"的法律或法规的忍；最后，在法律之外，不许一特定行为可能导致它，如果履行，是无效的，这是"刺激性"的法律。

The value changes for your program only, not for GDB itself. value may be any string; the values of environment variables are just strings, and any interpretation is supplied by your program itself. The value parameter is optional; if it is eliminated, the variable is set to a null value.

这个改变只针对你的程序，不影响 GDB 本身。value 可以是任何字符串，环境变量的值仅仅是字符串，任何解释都是你的程序自己的。value 参数是可选的，如果没有，变量会设为空值。

By around age three, George has ceased using null subjects, and has the following proportions for overt subject use: he uses full NP subjects 25% of the time, and pronominal subjects 75% of the time.

大约到了三岁，乔治不再使用空主词，而使用明显主词的比例如下：使用完整名词片语当主词占25%，代名词当主词占75%。

For example, if you put Null Profusion (an enchantment that says your maximum hand size is two) into play and then play Reliquary Tower, you'll have no maximum hand size.

举例来说，如果你将虚空满盈（会让你的手牌上限成为两张的结界）放置进场，然后使用圣物塔，你将不会有手牌上限。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。