Differences

This shows you the differences between two versions of the page.

--- zh-tw:everplast:machine_parts:vacuum_pump [2019/09/19 10:01] – 還原成舊版 (2019/09/16 16:00) emma_hsu
+++ zh-tw:everplast:machine_parts:vacuum_pump [2019/09/19 10:01] (current) – 移除 emma_hsu
@@ Line 1: / Line 1: @@
-====== Vacuum Pump ======
-A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The first vacuum pump was invented in 1650 by Otto von Guericke, and was preceded by the suction pump, which dates to antiquity.
-===== Reference URL =====
-  * https://en.wikipedia.org/wiki/Vacuum_pump