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1·Rocks like quartz, well, quartz of optical quality weren't cheap.

具有像石英这样的光学品质的石头并不便宜。

2·To this class of substance belong mica, porcelain, quartz, glass, wood, etc.

属于这类物质的有云母、瓷器、石英、玻璃、木材等等。《新英汉大辞典》

3·Nearly all computers contain a quartz-crystal clock to regulate their operation.

几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。

4·The intense heat of the impact would produce heat-shocked quartz in many types of rock.

撞击所释放的强烈高温会在许多类型的岩石中形成一种热冲击石英。

5·For 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。

6·European monks would take a piece of clear rock, often quartz, and place it on top of the reading material.

欧洲的僧侣们会拿一块透明的石头，通常是石英，放在阅读材料的上面。

7·Silicates such as mineral quartz drifted downward and mixed with denser materials as they reached Earth's core.

石英等硅酸盐向下漂移，在到达地核时与密度更大的物质混合。

8·Bishop's sandpiper poem, there in your handout, is obsessed with the mere details of experience, those sand grains and quartz grains.

我在讲义中提到，毕晓普类型的矶鹞诗人非常执迷于感受更加细微之处、那些细小的沙粒和石英碎片。

9·To date, several such secondary craters have been found along Mexico's Yucatan Peninsula, and heat-shocked quartz has been found both in Mexico and in Haiti.

到目前为止，在墨西哥尤卡坦半岛已经发现了几个这样的二级陨石坑，而且，在墨西哥和海地都发现了热休克石英。

10·Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.

石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。

石英

1·To this class of substance belong mica, porcelain, quartz, glass, wood, etc.

属于这类物质的有云母、瓷器、石英、玻璃、木材等等。《新英汉大辞典》

2·European monks would take a piece of clear rock, often quartz, and place it on top of the reading material.

欧洲的僧侣们会拿一块透明的石头，通常是石英，放在阅读材料的上面。

3·Silicates such as mineral quartz drifted downward and mixed with denser materials as they reached Earth's core.

石英等硅酸盐向下漂移，在到达地核时与密度更大的物质混合。

4·Rocks like quartz, well, quartz of optical quality weren't cheap.

具有像石英这样的光学品质的石头并不便宜。

5·For 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。

(1)quartz sand[化]石英砂

(1)quartz crystal石英晶体

(1)quartz vein石英脉

(1)quartz glass石英玻璃

(1)quartz tube石英管

(1)quartz diorite石英闪长岩