Tafuta ' ' kupata maudhui yanayofaa , ambayo inachukua sekunde }
Muhtasari:The pressurization size and time are the key to the success or failure of welding. If the square tube synthetic material[Soma maandishi yote]
Muhtasari:Uzalishaji wa tube wa viwanja zaidi ni upasuaji wa shinikizo la viwanja, na kusababisha mabadiliko ya plastiki ya chuma [Soma maandishi yote]