android beam 原理

Beam Calculator

Tool for Students and Engineers in civil engineering to make simple beam,steel column calculation in Your android device.Simple Usage:a)Choose formb)E...

M2 Compass

The M2 Compass is a simulator of the M2 Magnetic Compass. User is able to see Magnetic Azimuth in MILS. The Black arrow shows Azimuth in MILS and the ...