要导入和使用模块的 QML 类型，使用下列语句：
import Qt3D.Core 2.12
见 Qt 3D QML 类型 了解 Qt 3D 中的所有 QML 类型的列表。
| AbstractSkeleton | A skeleton contains the joints for a skinned mesh |
| Armature | Used to calculate skinning transform matrices and set them on shaders |
| Component3D | Provides the base type for creating Qt 3D components |
| Entity | Node subclass that can aggregate several Component3D instances that will specify its behavior |
| EntityLoader | Provides a way to dynamically load an Entity subtree |
| Joint | Used to transforms parts of skinned meshes |
| Node | A base QML type that other types inherit. It cannot be directly created |
| NodeInstantiator | 动态创建节点 |
| QuaternionAnimation | A PropertyAnimation for quaternions |
| Skeleton | Holds the data for a skeleton to be used with skinned meshes |
| SkeletonLoader | Used to load a skeleton of joints from file |
| Transform | Used to perform transforms on meshes |
