查询词典 trefoil

One end of the band spins 120 degrees, takes three turns and connects with the other end, which forms a model of a single side curve of a trefoil knot.

由原来相互独立的三个面变为一个连通的闭和曲面。

The broad symbolic significance of the trefoil knot is: science has no national boundary; interdisciplinary study has no boundary; science requires communication among countries; science and art are closely linked.

三叶纽结的广义象征意义是：科学没有国界，各学科之间没有边界，科学是相互连通的，科学与艺术是相互连通的。

The Trefoil knot, a main exhibit in the middle of the hall, is 10 meters wide, 12 meters high, with bandwidth of 1.65 meters. It is made from triangular prism band.

三叶纽结整体宽度10米，高12米，带宽1.65米，是由一条三棱柱带经过三次盘绕，将其中一端旋转120度后首尾相接，由此构成三面连通的单侧单边三叶纽结造型。

The C30 carbyne trefoil knot studied is intertwined by the sp hybridized15 chain, which is topologically chiral and belongs to D 3 point-group of symmetry.

三叶结分子是最简单的非平凡纽结分子， C30卡宾三叶结分子是由一条闭合的15 sp杂化碳链组成的，是具有 D 3对称性的拓扑手性分子。

Furthermore, the tied trefoil knot has less conjugation property and Jahn-Teller effect but higher total energy than the cyclo-C30 carbyne, that is, the process of "tied" could increase the energy of molecules.

因此，分子打结是一个能量升高的过程。

Density functional theory calculations have been carried on the molecular knot at the RB3LYP/6-31G levels. Based on the optimized geometry, the vibrational spectra, natural bond orbital and orbital energy level analysis for C30 carbyne trefoil knot have been calculated at the same level, and compared with the cyclo-C30 carbyne molecule.

本文用密度泛函方法[DFT/RB3LYP/6-31G]对分子结构和光谱性质进行了研究，在优化构型的基础上通过自然键轨道方法和轨道能级研究了它的共轭性、成键情况和稳定性，并与平面型C30卡宾环分子进行了比较。

In 1996, it was decided that the Trefoil corporate identity would only be used on heritage products.

1996年，它是决定该三叶法人身份只用于对文物的产品。

For years the only symbol associated with Adidas was the trefoil logo design.

多年以来，只有相关的符号与阿迪达斯是三叶的标志设计。

Once, he just wanted the athletes wearing the three stripes and trefoil of Adidas.

"金钱你是很难去了解的，"达斯勒曾经在一个饭局上这样说。

Objective: To explore the location and distribution of trefoil factor 2 (TFF2) in submandibular glands of male and female rats.

目的：探讨三叶因子2(TFF2)在大鼠下颌下腺的定位及其在不同性别中的表达差异。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐