The among them and most important is a certain type core and the construction of the type, for example adopt the whole the type of type still, and their fixed position and tight way of.

Aim CDT (categorical data type) is a parallel model basing on category theory, and this paper discusses the CDT construction of the memory type in details.

A loader is a type of construction equipment (engineering vehicle) machinery that is primarily used to "load" material into another type of machinery (dump truck, conveyor belt, rail-car, etc.).