查询词典 null

Stupp B C Synergistic effects of metals co-sputtered with MoS2 10.1016/0040-6090(81)90023-7 Thin Solid Films , 1981,null

齐尚奎%冯良波%高玲二硫化钼润滑失效的单电子转移机理研究摩擦学学报， 1996，2

Thakur S K%Dhindaw B K The influence of interfacial characteristics between SiCP and Mg/Al metal matrix on wear,coefficient of friction and microhardness Wear , 2001,null

樊建中%桑吉梅%张永忠%张奎%张少明%石力开铝基复合材料增强体颗粒分布均匀性的研究金属学报， 1998，11

HOLAH D G%HUGHES A N%HUI B C Reduction of Co with NaBH4 in the presence of triphenylphosphine 10.1139/v78-135 Canadian Journal of Chemistry , 1978,null

孙震%赵振东%李冬梅%刘先章金合欢醇羟基的溴取代反应研究林产化学与工业， 2004，z1

Lymphangioleiomyomatosis is an often fatal disease primarily affecting young women in which tuberin (TSC2)-null cells metastasize to the lungs.

淋巴管肌瘤病是主要发生于年轻女性的致命性疾病，该病的无抗结核菌素(TSC2)细胞转移到肺。

In this thesis, we find that dlg is indispensible in the establishment of anterior-posterior and dorsal-ventral polarity of drosophila oocyte. Removal of Dlg function from the posterior follicle cells using the FLP/FRT system leads to disruption of oocyte skeleton reconstruction that is elicited by the failure of those posterior cells to differentiate normally in mid-oogenesis. We demonstrate that abnormity of Notch, JAK-STAT and EGFR signal pathway in dlg mutants contributes to this aberrant differentiation. dlg null mutant also blocks the normal differentiation of two groups of anterior follicle cell-stretched cell and centripetal cell, but not border cell, with a lower penetrance. However unlike the result in posterior follicle cells, Notch and JAK-STAT signaling are both undisrupted in all mutant anterior follicle cells, implying other fate determinants may be involved.

我们的研究发现，后端滤泡细胞中的Dlg在果蝇卵子发生中期卵母细胞前后轴和背腹轴建立过程中也是必须的，PFC中dlg完全缺失型突变引起PFC的分化异常，导致卵子发生中期卵母细胞骨架重组异常，Stau、Grk等极性决定蛋白定位错误。dlg突变阻碍了Notch、JAK-STAT、EGFR等调节PFC分化的信号通路的激活。dlg突变的PFC也没有获得前端滤泡细胞命运。dlg突变不影响前端滤泡细胞群中边界细胞的分化，但是在一定程度上影响伸展细胞和向心细胞的分化，并且这种影响不依赖于前端滤泡细胞Notch或JAK-STAT信号激活的异常。

In L2 acquisition, Chinese learners of English face the problem of unlearning null objects.

空宾语在汉语中是很普遍的一种语言现象，但在英语中却违反语法规则。

Bakken B M%Hochella Jr M F%Marshall A F%Turner A M High resolution microscope of gold in unoxidized ore from the Carlin mine Navada Econ Geol , 1989,null

胡受奚%王鹤年%王德滋%张景荣%赵懿英中国东部金矿地质学及地球化学北京：科学出版社， 1998，null

It is an error for an element from the XSLT namespace to have attributes with expanded-names that have null namespace URIs (i.e. attributes with unprefixed names) other than attributes defined for the element in this document.

假如一个XSLT元素拥用一个扩展属性（该属性不是本文档中为该元素定义的），而该属性的名字却不拥有一个非空的命名空间URI（例如：属性的名字没有任何前缀）（拥用空的命名空间URI），这将被认为是一种错误。

Venner C H Multilevel solution of the EHL line and point contact problems Enschdede, Netherlands:University of Twente , 1991,null

郭峰 椭圆接触微观热弹性流体动力润滑求解的多重网格算法研究青岛建筑工程学院硕士学位论文， 1998，null

Verite R%Jounet M%Jarrige R A new system for the protein feeding of ruminants:the PDI system Livestock Production Science , 1979,null

毛玉胜 黄牛高产理论与实践西安：陕西科学技术出版社， 1996，null

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。