what is the difference between P=hdg and P=vdg.when and where should we use both of them.are the both same?
what is the difference between P=hdg and P=vdg.
when and where should we use both of them.are the both same?
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Last Activity: 2 Years ago
Last Activity: 2 Years ago
Last Activity: 2 Years ago
Last Activity: 2 Years ago