T-90 help

I was perusing some pictures of the T-90 tank and I was wondering if any one can tell me what these things are or do that hang off it. specifically the boxes with all the heat sink looking spikes on it and the boxes that have the hinged coverings on them.

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Attached Images

	t-90_168_of_261.jpg (235.1 KB)
	t-90_170_of_261.jpg (244.8 KB)
	t-90_176_of_261.jpg (240.7 KB)