1、 , () INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION (ISC) 32270 2013 2014 322702013 II , - 1.092 . 1.22009 . , . , , , 1 160 - , - , , - ( ) - , 4 2 3 , ( 28 2013 . 58- ) : ( 3166) 00497 ( 3166) 00497 AM KG MD RU TJ UZ 4 ASTM D 429609 Standard practice for sampling pitch ( ). A
2、STM D04 . (en). - 1.52001 ( 3.6). ASTM, - , - . (IDT) 5 28 - 2013 . 750- 322702013 - 1 2015 . 6 322702013 III , - . - ( ) . , - , 2014 - , - 322702013 IV 322702013 1 Pitches. Sampling 2015 01 01 1 1.1 , . 1.2 , , . . 1.3 - , . , . - - , - . 2 : 2.1 (bulk sample): , . 2.2 (composite sample): . 2.3 (g
3、ross sample): , ) . 2.4 (increment): - . 2.5 (representative sample): - , - . 2.6 (sample): , . 3 3.1 , - , . 3.2 , - , . 4 4.1 , . - , - , - . , , - , . 4.2 : 4.2.1 . 4.2.2 . 322702013 2 4.3 : 4.3.1 . 4.3.2 . 4.3.3 . 4.3.4 . 4.3.5 , . 4.3.6 . 4.4 . . - . 5 5.1 , - , - , . 5.2 - , . 6 6.1 : 6.1.1 - 1 3(1 ).) 6.1.2 - 1 3(1 ) 1 3 . 6.1.3 - 1 3(1 ) 1 3 . 6.1.4 - 0,5 3(1 ) 0,5 3 . 6.2 . 6.2.1 - 4 3(1 ) 4 3 . 6.2.2 - 4 3(1 ). 6.2.3 - 0,5- 3(1
