两侧对称

This is the first report that not only the differences of flower symmetry genes expression but also expression timings may result to zygomorphy/actinomorphy transition.

本研究首次报导不仅对称基因表现位置，甚至时间也是关键性因素，因而促成残存两侧对称的变异型辐射对称花的形成。

The second milestone was the development of bilateral symmetry ( two halves of the body mirror each other ) with an identifiable head , in contrast to radial symmetry ( symmetrical in a ray pattern from the center ), for example , jellyfish .

第二个重要事件是动物身体进化成两侧对称，并出现明显的头部组织。当然也有例外，例如海蜇这种生物就是径向对称（即对称点在身体中心，呈放射对称）。

Analysis of these mutations and cloning the corresponding loci will shield light on the underlying molecular mechanism in the control of floral asymmetry and facilitate our understanding on the evolution of the zygomorphic development.

对这些突变体的分析和基因克隆有助于阐明两侧对称花型发育的调控机制和理解两侧对称花型的进化途径。

This design center simple chain about the scraper conveyer two sides are symmetrical, may install the reduction gear on two sidewalls, by left meets, the right mining coal working surface need.

此次设计的中单链型刮板输送机左右两侧对称，可以在两侧壁上安装减速器，以适应左、右采煤工作面的需要。

For the starry flounder this interpretation implies that a geometric difference (between fish that are mirror images of one another) is adaptive, that left-eyedness in the Japanese starry flounder has been selected for, which provokes a perplexing question: what is the selective advantage in having both eyes on one side rather than on the other?

对于星形比目鱼来说，这种说法暗示形状上的差异（同左右两侧对称的鱼相比）是适应性的，日本的星形比目鱼之所以眼在左侧，是选择的结果，但这又引起了一个令人困惑的问题：两只眼睛都在一侧比两只眼睛分在两侧具有什么选择性的优势呢？

For the starry flounder this interpretation implies that a geometric difference (between fish that are mirror images of one another) is adaptive, that left-eyedness in the Japanese starry flounder has been selected for, which provokes a perplexing question: what is the selective advantage in having both eyes on one side rather than on the other?

对于星形比目鱼来说，這种说法暗示形状上的差异（同左右两侧对称的鱼相比）是适应性的，日本的星形比目鱼之所以眼在左侧，是选择的结果，但這又引起了一个令人困惑的问题：两只眼睛都在一侧比两只眼睛分在两侧具有什么选择性的优势呢？

The normal mamillothalamic tracts and mamillary bodies were symmetric in size and signal intensity. The abnormal mamillary bodies were identified as asymmetric in size.

正常乳头丘脑束及乳头体两侧对称，信号均匀，与穹窿的信号一致；异常的乳头体表现为两侧不对称，一侧明显变小，并且乳头丘脑束显示不清。

The knock-down of the three LjCYC genes gives rise to the ventralized identity to all petals, which are keeled shape, resulting in a floral transformation from a zygomorphy to an asymmetry, indicating that the asymmetry floral pattern could be a ground stage before LjCYC1, LjCYC2 and LjCYC3 being recruited in the control of floral asymmetrical development in Lotus japonicus.

本实验得到了LjCYC1、LjCYC2和LjCYC3表达均下调的转基因株系L1+2Ri/kew1，该植株所有花瓣呈现腹部属性，出现了花瓣形态全是龙骨瓣状的非对称花瓣，花型也从两侧对称转化为无对称面；这种花型表明，在LjCYC1、LjCYC2和LjCYC3等三个基因全失活的情况下，龙骨瓣状花瓣应该是一个基准状态。

For the foramen ovale in MRI, bilateral symmetry 13 cases(65%) and asymmetry 7 cases(35%);rotundum 8 sides(20%),ovale 32 sides(80%).

全部患者卵圆孔及棘孔在增强T1WI上为双侧显示，卵圆孔两侧对称13例(65%)，两侧不对称7例(35%)；呈圆形8例(20%)，呈椭圆形32例(80%)。

Flatfish, such as the flounder, are among the few vertebrates that lack approximate bilateral symmetry (symmetry in which structures to the left and right of the body's midline are mirror images).

鲆鱼，例如比目鱼，是少数左右两侧不太对称的脊椎动物之一（左右两侧对称指的是身体中线左右两边的结构为镜象反射）。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。