I use thiese processors in Arduino IDE and if i colud use them in Arduino IDE, i can use them in Atmel studio too with arduinos languge, wiring?
No, not correct. The Arduino "language" is simply a collection of libraries that translate to C/C++ and then uses AVR-GCC to perform the actual compile and AVRDUDE to move the HEX file to the AVR uC. The Arduino GUI is all JAVA and essentially manages the process of passing to the command line the correct arguments, paths, and things like the uC type and communication protocol.
The reason a plugin is needed for AvrStudio is that studio has no conception on the libraries syntax or the compile and linking requirements. The plugin also allows the editor to know about Arduino keywords, etc.
In theory, you could use notepad to write blink.c and type all of the necessary commands from the command line.... Sounds like bunches of fun!
Rasy