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nice explanation mam, Thank you for explaining in simpler way
Hello Ma'am. Thank u I have a question Why we r piercing the cover? what if I don't? I am doing my experiment without piercing the cover? And the instrument I'm using is old and different model
Amazing
nice explanation mam, Thank you for explaining in simpler way
Hello Ma'am. Thank u I have a question Why we r piercing the cover? what if I don't? I am doing my experiment without piercing the cover? And the instrument I'm using is old and different model
Amazing