價格：免費
更新日期：2020-04-13
檔案大小：1.3 MB
目前版本：2.1.0
版本需求：系統需求：iOS 12.2 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
Users can change between I-P and S-I units by tapping the units, on the right.
Duct sizes can be obtained based on either maximum friction or velocity. Tap on the values for velocity or friction to switch between calculation methods.
Calculations are based on standard air 0.075 lb/ft3 (1.2 kg/m3) in clean galvanized steel duct.
Any feedback is welcome, and will be the basis for future updates.
支援平台：iPhone, iPad