The simplest type of pressure gauge is the open-tube manometer. 最簡(jiǎn)單的壓力計，是開(kāi)管流體壓力計。
These pressure sources are measured by two independent but matched Bourdon tubes, housed within an aluminum case. 壓力源通過(guò)兩個(gè)獨立但相配的波爾登壓力計加以測試，該壓力計安裝于鋁合金箱中。
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