查询词典 four dimensional

Thus, only spatial components of the four-dimensional vector potential are needed to be considered in our work.

这样，只有胶子场四维矢势的空间分量需要考虑。

Based on Chen Guoda's historic-causationist geotectonics and the thought of four-dimensional space-time, the polygenetic compound metallogenic characteristics about the deposit is discussed, finally it is determined as a typical polygenetic compound deposit.

根据陈国达历史－因果论大地构造学提出的多因复成矿床概念和时空四维兼顾研究思路，讨论厂阿舍勒铜矿的多因复成矿床特徵，厘定其为一个多因复成型矿床。

To solve the problem of channel with distortions, an adaptive circuit is configured by a new laddered method based on relevant articles, and simulation study was made on four dimensional Chua's chaos oscillator. The simulation results demonstrated that: synchronization of two chaotic oscillators can be achieved when adaptive circuit has adaptive capability. Synchronization of two chaotic oscillators cannot be achieved when adaptive circuit has no adaptive capability. Simulation studies were done for five scroll chaotic oscillators that achieve bond-orbit, coupling and pulse synchronization.

为了解决信道畸变问题，根据相关文献提出的梯度法，本文构造了一种自适应同步电路，并以四阶变型蔡氏混沌振荡电路为例进行仿真研究，仿真结果表明：当自适应同步电路具有自适应效应时能实现有噪声干扰情况下的两个混沌振荡电路的同步；若自适应同步电路没有自适应效应时，则不能使两个混沌振荡电路同步；以5涡卷混沌振荡电路为例用键波同步法、耦合同步法、脉冲同步法进行同步仿真研究。

Ward J V The four-dimensional nature of lotic ecosystems Journal of the North American Benthological Society , 1989,8

刘昌明 我国西部大开发中有关水资源的若干问题中国水利， 2000，8

Ward JV, The four-dimensional nature of lotic ecosystems, J North Amer Benthol Soc,

蔡庆华、唐涛、刘建康，河流生态学研究中的几个热点问题，应用生态学报，2003，14(9)：

Both statistical-mechanical and thermodynamical entropies of the nonextreme sta-tionary axisymmetric black holes in four-dimensional spacetime are investigated by"Brickwall"model,Euclidean path integral method and conformal field theory at Killing horizon,respectively.

本文分别用砖墙模型、Euclidean路径积分和Killing视界上的共形场论方法研究了四维非极端稳态轴对称黑洞的热力学熵和统计力学熵。

Sino-foreign joint venture with three special viscose products factory, located in Bao'an District, Shenzhen City manhole town of the new third Futamura Nanling Road industrial area, with more than two decades of viscose with production, management experience, to the processing plant mainly Featured World brand of raw materials, to provide customers with high quality tape for the purpose; and the United States, 3M, Tesa, Japan Ridong, Sony, Hitachi, water, Great Japan, Temple, lion Leone, Korea TACONIC, Daehyeon, Taiwan's four-dimensional, the Earth, Asia, and so has a long-term good relations of cooperation.

中外合资三批特种粘胶带制品厂，位于深圳市宝安区沙井镇新二村第三工业区南岭路，有着二十多年的粘胶带生产、经营经验，工厂以来料加工为主，精选世界名牌原材料，向客户提供优质胶带为宗旨；和美国3M、德莎，日本日东，索尼，日立，积水，大日本、寺、狮立昂，韩国TACONIC、大贤，台湾四维、地球、亚化等公司有着长期良好的合作关系。

Our company takes cultural marketing system of four-dimensional economy as the core," the tree is brilliant in a century that inherit, if cast the green for a long time family estate ", with the enterprising spirit of " striving, pioneering and inventing, being practical and high-efficient, pursuing being outstanding in coordination ", it put forward " with setting up by bodying, with sincere to treat by people, by rule of virtue enterprise " slogan,it is " know whether there are peoples not to establish, if have both ability and political integrity ", thus realize company of " deal in continuously forever, favour pool world " wish the scene.

本公司以四维经济文化营销系统为主，秉承&树百年辉煌，铸长青基业&的发展理念，以&协同拼搏、开拓创新、务实高效、追求卓越&的企业精神，提出&以诚立身、以诚待人、以德治企&的口号，树立&知人善用，德才兼备&的人才观，从而实现&永续经营，惠泽世界&的公司愿景。

I have a friend, 25 weeks when four-dimensional color Doppler ultrasound, the doctor said fetal hydrocephalus, to scare them of.

我有的个朋友，25周时做四维彩超，医生说胎儿脑积水，把他们给吓的。

Pregnancy I am 25 +5 W have been in the hospital according to four-dimensional color Doppler ultrasound, color Doppler ultrasound examination at the time the doctor said that a site can not see, but the results came out, apart from the umbilical cord around the neck two weeks, other are also normal, single-color review of the proposed 32 weeks, but look at the results of color after the doctor said not to review, so I do not know whether it is necessary to review in the end?

我怀孕25+5W时在医院照过四维彩超，当时彩超检查的医生说某个部位看不到，不过结果基本出来了，除了脐带绕颈2周，其他都还正常，彩超单上建议32周复查，但看结果的医生看彩超单后未说复查，所以我不清楚到底是否需复查？

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。