“perpetual calendar”造句，怎么用perpetual calendar造句

5、Patek Philippe platinum and diamond-set perpetual calendar chronograph wristwatch with moon-phases and leap-year indication, circa 2009, REF 5971P.

1、Design of perpetual calendar based on real-time clock and LCD

3、Yellow gold hunter case, movement with simple chronograph, 48-month perpetual calendar, phases and age of the moon, minute repeater.

6、Above thellos, where the cognoscenti prowl, prices reach six figures for perpetual calendars, tourbillons and minute repeaters.

4、Yellow gold case, enameled dial with Arabic numerals, pear-shaped hands, movement with 48-month perpetual calendar, phases and age of the moon, minute repeater.

2、This paper introduces a chinese displaying perpetual calendar clock which is made up if8031 single-chip Microcomputer.