nacre

简明释义

英[ˈneɪkə]美[ˈneɪkər]

n. 珍珠层；珠母贝；珍珠母

英英释义

单词用法

同义词

反义词

例句

1.The structural color of nacre in bivalve shells of Pinctada maxima is derived from the combination effects of aragonite-protein multilayer structure and yellow pigments in nacre.

大珠母贝珍珠层的结构色是由文石板片和蛋白质层构成的多层薄膜结构和黄色素的共同作用决定的。

2.The sun is setting fast. The colors die. They shift from purple to dried blood, from nacre to bister, from cool dead grays to pigeon shit.

太阳很快要落下去了，天空中的色彩也消失了，紫色变成干血色，青贝色变成褐色，黯淡的灰色变成鸽粪色。

3.The nacre is known by people's attention for a long time which is one of the general construction units of mollusk shell.

珍珠层很早就引起了人们的关注，它是软体动物贝壳中普遍发育的一种结构单元。

4.The unusual exothermal transformation of nacre aragonite to calcite is perhaps resulted from the stored excess enthalpy in nanometer-size aragonite of nacre.

珍珠层文石这种异常的热相变特征可能是由纳米级文石储存的过剩焓引起的。

5.The relative concentrations of carotenoid in nacre are closely associated with the color of nacre and tend to reduce gradually from posterior to umbo region in nacre of the same shell.

珍珠层中类胡萝卜素的相对浓度与珍珠层的颜色密切相关，在同一贝壳中从壳后端至壳顶，其相对浓度逐渐变小。

6.Our nacre shell cream is made from crushed oyster shell which are rich in nacre, conchiolin, proteins and nutrients.

我们的珍珠层霜选用富含珠母贝、贝壳硬蛋白、蛋白质和营养成分的牡砺壳制成。

7.In some cultures, nacre is considered a symbol of purity and beauty.

在某些文化中，珍珠层被视为纯洁和美丽的象征。

8.The artist used nacre to create a stunning inlay on the wooden box.

艺术家使用珍珠层在木盒上制作了惊艳的镶嵌。

9.The nacre inside the oyster was harvested to make exquisite jewelry.

从牡蛎内收获的珍珠层被用来制作精美的珠宝。

10.The interior of the shell was lined with nacre, giving it a beautiful iridescent quality.

贝壳的内部衬有珍珠层，赋予其美丽的彩虹色特质。

11.Jewelry made from nacre is often prized for its unique luster.

用珍珠层制作的珠宝因其独特的光泽而备受珍视。

作文

The beauty of nature is often reflected in the intricate details of its creations. One such creation that has fascinated humans for centuries is the pearl. Pearls are not just any ordinary gems; they possess a unique quality that sets them apart from other gemstones. This quality comes from the substance known as nacre, which is the iridescent layer formed by mollusks inside their shells. The process of pearl formation is a remarkable journey that begins when an irritant, such as a grain of sand, enters the mollusk's shell. In response to this irritant, the mollusk secretes layers of nacre around it, gradually forming a pearl over time.The allure of pearls lies in their luster, which is a direct result of the nacre layers that reflect light in a mesmerizing manner. Each layer of nacre adds depth and richness to the pearl, creating a stunning visual effect that has captivated jewelry enthusiasts and collectors alike. The thickness and quality of the nacre can vary depending on the species of mollusk and the conditions in which it lives. This variability contributes to the uniqueness of each pearl, making them highly sought after.In addition to their aesthetic appeal, pearls and their nacre have cultural significance in various societies. Throughout history, pearls have been associated with wealth, status, and elegance. They have adorned the necks of royalty and have been used in religious ceremonies, symbolizing purity and innocence. The nacre of pearls is often seen as a representation of the natural world’s beauty and complexity, reminding us of the delicate balance that exists within ecosystems.Moreover, the study of nacre extends beyond its role in pearl formation. Scientists and researchers are intrigued by the structure of nacre due to its exceptional mechanical properties. It is composed of aragonite (a form of calcium carbonate) and organic materials, arranged in a brick-and-mortar structure that provides strength and resilience. This unique composition has inspired advancements in materials science, leading to the development of new synthetic materials that mimic the properties of nacre. These materials are being explored for use in various applications, including biomedical devices and protective coatings.The fascination with nacre and pearls continues to inspire artists, designers, and scientists alike. Whether it is through the creation of exquisite jewelry or the exploration of its scientific properties, nacre remains a testament to nature’s ingenuity. As we delve deeper into the mysteries of nacre, we gain a greater appreciation for the intricate processes that shape our world and the treasures it holds. In conclusion, the beauty of nacre is not only found in the pearls it produces but also in the lessons it teaches us about resilience, creativity, and the interconnectedness of life.

大自然的美往往反映在其创造物的复杂细节中。其中一种让人着迷的创造物就是珍珠。珍珠不仅仅是普通的宝石；它们拥有一种独特的品质，使其与其他宝石不同。这种品质来自名为母贝的物质，母贝是由软体动物在其壳内形成的彩虹色层。珍珠形成的过程是一个非凡的旅程，始于当一个刺激物，如沙粒，进入软体动物的壳内。为了应对这种刺激物，软体动物会分泌出一层层的母贝，逐渐在时间的推移中形成珍珠。珍珠的魅力在于其光泽，这直接源于母贝层对光线的迷人反射。每一层母贝都为珍珠增添了深度和丰富性，创造出令人惊艳的视觉效果，吸引了珠宝爱好者和收藏家。母贝的厚度和质量可能因软体动物的种类和其生活环境的条件而异。这种变异性使得每颗珍珠都具有独特性，使其极具价值。除了审美吸引力之外，珍珠及其母贝在各个社会中也具有文化意义。在历史上，珍珠一直与财富、地位和优雅相关联。它们装饰过皇室的脖颈，并在宗教仪式中被使用，象征着纯洁和无辜。珍珠的母贝常常被视为自然世界美丽和复杂性的代表，提醒我们生态系统中存在的微妙平衡。此外，母贝的研究超越了其在珍珠形成中的角色。科学家和研究人员对母贝的结构充满兴趣，因为它具有卓越的机械性能。它由方解石（一种碳酸钙形式）和有机材料组成，按砖石和砂浆的结构排列，提供强度和韧性。这种独特的组成激发了材料科学的进步，导致新型合成材料的开发，这些材料模仿母贝的特性。这些材料正在被探索用于各种应用，包括生物医学设备和保护涂层。对母贝和珍珠的迷恋继续激励着艺术家、设计师和科学家。无论是通过精美珠宝的创作，还是对其科学性质的探索，母贝仍然是自然智慧的证明。随着我们深入探索母贝的奥秘，我们对塑造我们世界的复杂过程以及它所蕴藏的珍宝有了更深的理解和欣赏。总之，母贝的美不仅体现在它所产生的珍珠中，还体现在它教会我们的关于韧性、创造力和生命相互联系的课程中。