On the basis of the transformation of nonintegral folede-chain (NIF) crystals into integral folded-chain(IF) crystals,the growth processes of double lamellae and single layer lamellae is discussed.
In this paper, some conducts unmeet to the specifications are expounded according to the inspection to this factory building, and corresponding strengthening proposals are also raised.
In both types of feather, the barbules that extend from the barb ramus grow from a single layer of cells, called the barbule plate, on the periphery of the barb ridge.