Tafuta ' ' kupata maudhui yanayofaa , ambayo inachukua sekunde }
Muhtasari: source, sampling date, sampling person weather conditions and other materials of the oil sample.Untofauti kati ya mabad[Soma maandishi yote]
Muhtasari:Baadhi yao wamefungwa na risasi ya plastiki, kwa sababu soketi haiwezi kushinikizwa vizuri wakati wa kupandwa, na bado k[Soma maandishi yote]