查询词典 alternating function

Phytosociological description of vegetation has always been found on field sampling alternating with studies of the releves at home.

植被的群落学描述已经常以野外抽样为基础来取代室内样地记录的研究。

Male flowers: sepals 5, imbricate; petals 5, longer than sepals; disk absent; stamens [5 or]10 and 2-seriate, inserted on fleshy receptacle, outer ones alternating with petals, inner ones sometimes absent or reduced and scalelike; filaments free; anthers longitudinally dehiscent, 2-loculed; pistillode present.

雄花： 萼片5，覆瓦状；花瓣5，比萼片长；花盘无；雄蕊 [5或者 ]10 和2轮，着生于肉质花托，外轮与花瓣互生，内轮有时无或退化成鳞片状；花丝离生花药纵向开裂，2室；退化雌蕊宿存。

A range of oligoaryls having alternating para- or meta-benzene-furan rings is synthesized by rapid convergent/divergent method from the annlation of a propargylic dithioacetal and an aldehyde having a propargylic dithioacetal moiety as the substituent.

中文摘要结合分流法/汇集法，利用炔丙基硫缩酮单体和另一具有醛基的单体进行环化反应，可以迅速合成对位及间位取代苯环呋喃交错寡聚物。

In order to investigate antenna with complex structure efficiently, the combination of alternating-direction-implicit and pseudospectral time-domain method is used.

为了对复杂结构的天线进行有效分析，采用了变换方向隐式的伪谱时域方法，通过分析时间分裂步原理，将三维麦克斯韦方程组降阶为三组一维表达式，用于ADI-PSTD的计算。

In order to investigate antenna with complex structure efficiently, the combination of alternating-direction-implicit and pseudospectral time-domain method is used. By analyzing the time-step splitting principle, the ADI-PSTD method is therefore simplified.

摘 要：为了对复杂结构的天线进行有效分析，采用了变换方向隐式的伪谱时域方法，通过分析时间分裂步原理，将三维麦克斯韦方程组降阶为三组一维表达式，用于ADI-PSTD的计算。

It had three distinct phases with alternating fortunes, such as the crushing Roman defeat at Caudine Forks (321 BC), until Rome won the definitive victory at Sentinum (295 BC) against a coalition that also included Etruscans and Senones, a Gallic tribe.

其间有三个阶段双方互有优势，象（前321年）罗马在CAUDINE FORKS的大溃败，以及（前295年）罗马在斯提那获得对还有伊特鲁里亚人和高卢部族塞罗尼人参加的一个联盟的最终胜利。

In a normal alternating current power system, the voltage varies sinusoidally at a specific frequency, usually 50 or 60 hertz.

在一个正常的交流电力系统，正弦电压变化在特定的频率，通常是50或60赫兹。

A progressive sequence of dies for forming a cavity having a desired length, width and depth, comprising: a plurality of extendable punches, each with an impact surface, said impact surfaces alternating between a first desired pattern comprising a plurality of piercing points and a second desired pattern comprising an essentially flat surface, the length and width of each said impact surface approximately equal to the desired length and width of said cavity; a die body including a plurality of apertures adapted to receive each said punch; an opposing post positioned within each said aperture having an impact surface congruent with each said impact surface; and at least one moveable forming bushing supported by at least one forming bushing actuator slideably engaged to each said opposing post.

形成有被需要的长度、宽度和深度的一个洞的一钢模的前进序列，包含：一个可扩充打洞器的多数，每个与一个冲击表面，说冲击升至水面交互的在组成一个刺骨点的多数的一个首先需要的式样之间而且秒需要了组成一个本质上平坦的表面、长度的式样，而且每个的宽度对被需要的长度和说的洞宽度说大约相等的冲击表面；一个包括一个孔的多数一钢模身体适应接受每个说打洞器；放置在每个里面的反对职位说孔让一种冲击升至水面适合的与每个说冲击表面；而且至少被可滑动地每个被预订到的至少一个形成桥衬主动器支援的一个家具形成桥衬说反对职位。

The method by drying/adsorption was used to prepare DNA adsorptively modified electrodes, and thus-resulting DNA-modified electrodes were electrochemically and spectroscopically characterized, including cyclic voltammetry, scanning tunneling microscopy, Raman spectroscopy, in-situ UV/Vis reflection spectroscopy, X-ray photoelectron spectroscopy, and alternating current impedance. Some information about the state of DNA immobilized on electrode surfaces was obtained.

鉴于此，本论文工作首先利用简便的干燥吸附法制备获得DNA吸附修饰电极，采用电化学方法及多种谱学仪器方法如STM，XPS，Raman，交流阻抗，UV-Vis现场光谱等对DNA修饰电极进行了表征，获得了有关DNA在电极表面状态等有价值的信息；又采用自组装单分子层修饰技术，制备出DNA共价键合修饰SAM/电极，并对制备条件进行了优化，利用XPS及电化学方法对修饰电极进行了表征。

Spinulosa also failed to germinate by GA3 alone and required alternating temperatures of 30/20℃ for at least 8 wk, and then GA3 could replace cold stratification for germination.

本研究利用激勃素GA3刺激这四种林木种子的发芽，探讨激勃素层积和休眠解除问之相关性。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样