Mashiinka carrabka ee alwaaxdu ka goyn karo mashiinka alwaaxka ah ee saxanka dhumucda, taasi waa sababta carrabka ee loo yaqaan 'Wilen carrabka' ay ka kooban tahay qalab muhiim ah oo ku jira soosaarayaasha carrabka ee alwaaxa ah. BIDRARGON-ka waa soo saaraha mashiinka qafiifka ah ee loo yaqaan 'Works' oo xirfadladeena ah oo makiinadu way fududahay in la hawl galo oo si fudud loo hagaajiyo oo si ballaaran loogu isticmaalo garoonka wax soo saarka alwaaxa.
