air dan angin. Sebagian besar sumber energi terbarukan menghasilkan nol emisi karbon dan polutan udara minimal. Bahan bakar fosil (minyak, batu bara dan gas alam) di sisi lain, adalah sumber daya yang
POMPA JENIS ALIRAN BERPUSARPROBLEM TO BE SOLVED: To adapt to a model of different pump characteristic in a state that the same components are used in a main body part, by forming both or one of a casing and a casing cover by a liner plate, a ring plate, and the main body part ...