quartz

• 石英

ドイツ語のQuarzから、石の結晶、石英。

quartz (n.)

"silicon dioxide," 1756, from German Quarz, Zwarc "rock crystal," from Middle High German twarc, probably from a West Slavic source, compare Czech tvrdy, Polish twardy "quartz," noun uses of an adjective meaning "hard," from Old Church Slavonic tvrudu "hard," from Proto-Slavic *tvrd-, from PIE *(s)twer- "to grasp, hold; hard."

1. The prospectors have discovered such minerals as calcite， quartz and asbestos here.

探鉱員はここで方解石、石英、石綿などの鉱物を発見した。

2.There is a great deal quartz in those mountains.

それらの山には大量の石英が埋蔵されている。

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

このような物質に属するのは雲母、磁器、石英、ガラス、木材などである。

4.The quartz watch keeps good time.

石英時計の動きのタイミング

5. Quartz timepieces are very accurate，to a minute or two per year.

石英時計は正確で、年間誤差はわずか1、2分である。