the relation of opposition along a diameter 同义词：antipodal opposition, diametrical opposition,
relating to the antipodes or situated at opposite sides of the earth; "antipodean latitudes"; "antipodal regions of the earth"; "antipodal points on a sphere" 同义词：antipodean,
例句与用法
1.
Three nuclei differentiate into the antipodal cells . 三个核分化成为反足细胞。
2.
However , once the antipodal images are realized , the viewer instantaneously relates to the message hatakeyama is forcing upon him / her 然而，一旦认识到是对面的图像时，观众立刻得到信息， ?山直哉正在对他/她施加压力。
3.
Antipodal cells the three haploid cells found in the embryo sac of seed - bearing plants that migrate to the chalaxal end of the sac farthest from the micropyle 反足细胞：胚囊三次分裂形成卵细胞，助细胞和极核等，其中位于合点端的三个单倍体细胞称反足细胞。
4.
Embryological studies reveal that megaspore and such cells as egg , synergid and antipodals in mature embryo sac initiate the division of forming haploid plants through embryogenesis or callus formation 胚胎学观察揭示大孢子与胚囊内的卵细胞、助细胞和反足细胞均有可能在培养中启动分裂，通过胚状体或愈伤组织形成单倍体植株。
5.
The characteristics of various solid - state power - combining techniques and the principles of the waveguide - based power combining structure are compared and analyzed in detail . the power combiner is based on a double antipodal finline - to - microstrip transition structure . the proposed 2 2 combining structure is optimized by using 3 - d fields simulation tools cst 主要内容为: 1 .研究和对比了各种固态功率合成技术的特点,详细地分析了波导基空间功率合成器的工作原理,提出了一种基于双对极鳍线-微带过渡的2 2路毫米波功率合成器结构,借助三维场仿真软件cst对该无源网络进行了优化设计。
6.
The theory of wilkinson power combiner and ratrace coupler is analyzed by using the odd - even mode method in this thesis . on the basis of the theoretical analysis , we designed and tested the wilkinson power divider , the modified wilkinson power divider and ratrace coupler , good agreement is observed . in addition we propose a power combiner based on a waveguide - to - microstrip transition using antipodal finlines . this structure united the two functions of transition and equal power division , it can not only be used in the circuit power combiner but also be used in spatial power combiner 另外提出一种基于鳍线波导微带过渡功分器，该结构将过渡与功分两种功能完全结合，不但可以用于电路合成式功率合成，也可用于空间功率合成中。对功率合成器，其主要指标是输出功率和效率，其中提高输出功率和效率的一个方法是在输出端抑制谐波，主要是对二次谐波的抑制。
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