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The constituent molecules are actually micro geometrical shapes, such as parallelepipeds. Different crystals are composed of different constituent molecules. Laue’s X-Ray diffraction experiment in 1902 is a great breakthrough in crystallography. Before this experiment, scientists could only guess what was the structure inside a crystal.
3The cliffs, lapped by a crystal-clear sea, remind her of Capri.清澈透明的大海拍打着峭壁,让她想起卡普里岛。《柯林斯英汉双解大词典》 14For example, we have Quartz crystal clocks and watches accurate to within one minute a year.例如，我们使用的每年误差不超过1分钟的石英水晶钟表和手表。
住房条约明明白白。. the crystal resonates at 16 MHz. 这晶 在频率为16兆赫时产生共振。. a biform crystal; the biform body of a mermaid. 两形晶 ；美人鱼的身 是半人半鱼的。. broke the crystal through rough handling. 因动作毛糙而将水晶制品打碎了. handled the crystal bowl with care. 小心谨慎地 ...
2022年11月16日 · Because the crystal structure is the infinite arrangement of its structural units (cells) in space, the crystal microstructure must have symmetry elements that cannot appear in the macroscopic symmetry, and it is also called nonpoint symmetry operation. Nonpoint symmetry operation includes the following. (1) Screw axis.
2022年10月31日 · Types of Crystals With Pictures. 1. Adamite. Adamite is a crystal that can occur in many different colors. When impurities are present, the color is altered, which explains adamite’s wide range of colors. Adamite has a vivid green or blue hue when copper is present, and a pink to purple tint when cobalt is present.
2021年10月7日 · In this paper, we describe an algorithm implemented in the CASM software package 15, 38, 39 to enumerate mappings between pairs of crystal structures. As part of the mapping approach, we introduce ...
晶晶教育出版社於一九七九年由陸趙鈞鴻博士創辦。出版社自成立以來，以提供高質素兒童讀物給小朋友為目的，所有讀物全部由本社社長 幼兒教育專家陸趙鈞鴻博士所編著。 圖書方面，過去出版的圖書深受小朋友的喜愛，更獲家長、教育界人士、兒童文學家的高度評價，其中「晶晶圖畫故事叢書 ...
