aXVal, double aYVal, double aZVal ); void SetVector( const SGVECTOR& aVector ); SGVECTOR& operator=( const SGVECTOR& source ); }; The IFSG_NODE class is the base class for all scenegraph nodes

aXVal, double aYVal, double aZVal ); void SetVector( const SGVECTOR& aVector ); SGVECTOR& operator=( const SGVECTOR& source ); }; The IFSG_NODE class is the base class for all scenegraph nodes

double aXVal, double aYVal, double aZVal ); void SetVector( const SGVECTOR& aVector ); SGVECTOR& operator=( const SGVECTOR& source ); }; The IFSG_NODE class is the base class for all scenegraph nodes

double aXVal, double aYVal, double aZVal ); void SetVector( const SGVECTOR& aVector ); SGVECTOR& operator=( const SGVECTOR& source ); }; The IFSG_NODE class is the base class for all scenegraph nodes

aXVal, double aYVal, double aZVal ); void SetVector( const SGVECTOR& aVector ); SGVECTOR& operator=( const SGVECTOR& source ); }; ‘IFSG_NODE’ 类是所有场景图节点的基类。 所有 scenegraph 对象都实现此类 的公共函数，但在某些情况下，特定函数可能对特定类没有意义。

double aXVal, double aYVal, double aZVal ); void SetVector( const SGVECTOR& aVector ); SGVECTOR& operator=( const SGVECTOR& source ); }; ‘IFSG_NODE’类是所有场景图节点的基类。所有 scenegraph 对象都实现此类的公共函数，但在某些情况下，特定

important and the major requirement is function of the completed printed board. Class 2 Dedicated Service Electronic Products Includes communications equipment, sophisticated business machines, instruments instruments where high performance and extended life is required and for which uninterrupted service is desired but not critical. Certain cosmetic imperfections are allowed. Class 3 High Reliability Electronic boards in this class are suitable for applications where high levels of assurance are required and service is essential. PCB Types In IPC-6012B there are also 6 Types of PCB defined: Printed Boards without

important and the major requirement is function of the completed printed board. Class 2 Dedicated Service Electronic Products: Includes communications equipment, sophisticated business machines, instruments instruments where high performance and extended life is required and for which uninterrupted service is desired but not critical. Certain cosmetic imperfections are allowed. Class 3 High Reliability Electronic boards in this class are suitable for applications where high levels of assurance are required and service is essential. PCB Types In IPC-6012B there are also 6 Types of PCB defined: Printed Boards without

important and the major requirement is function of the completed printed board. Class 2 Dedicated Service Electronic Products: Includes communications equipment, sophisticated business machines, instruments instruments where high performance and extended life is required and for which uninterrupted service is desired but not critical. Certain cosmetic imperfections are allowed. Class 3 High Reliability Electronic boards in this class are suitable for applications where high levels of assurance are required and service is essential. PCB Types In IPC-6012B there are also 6 Types of PCB defined: Printed Boards without

important and the major requirement is function of the completed printed board. • Class 2 Dedicated Service Electronic Products Includes communications equipment, sophisticated business ma- chines, instruments instruments where high performance and extended life is required and for which uninterrupted service is desired but not critical. Certain cosmetic imperfections are allowed. • Class 3 High Reliability Electronic boards in this class are suitable for applications where high levels of assurance are required and service is essential. PCB Calculator 7 / 7 2.7.2 PCB Types In IPC-6012B there are also 6 Types of PCB