quartz day-date 石英双历表
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。
Three-hand analog quartz movement with date display window.
三手石英机芯日期显示窗。
Gouge is an information carrier for fault activity, and the motion mode and date of the fault activity can be identified by observation of micro-shape characteristics of quartz in the gouges.
断层泥是断层活动的信息载体，其中的石英颗粒微形貌特征能够反映断层活动年代、活动方式。
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