Самостоятельный расчёт теплотехники «Калькулятор Porotherm» предназначен для тех, кто собирается строить свой дом, но ещё не определился со стеновым м...
Find the pressure loss per 100 ft, velocity, velocity pressure, and various other flow parameters of rectangular and round ventilation ducts of any si...
Save 60% over individual module purchases with HVAC Practice (All Inclusive)!Practice for a variety of Air Distribution Technician Exams. North Americ...
Digital Signature Creatoris an useful app to create your own digital signatures for your documents (Pdf,Word etc..)Without using a pen with realistic ...
Now it contains First Aid instructions for emergency cases.S&S App has prepared to quick access useful tools for any time you need. Access the feature...