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- 2019-05-24 ISO/TS 19807-2 "Nanotechnologies -- Magnetic nanomaterials -- Part 2: Specification of characteristics and measurements for nanostructured superparamagnetic beads for nucleic acid extraction"
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GB/T 2689.1-1981
Constant stress life tests and acceleration life tests--General rules
GB/T 726-1994
往复式内燃机 旋转方向、气缸和气缸盖上气门的标志及直列式内燃机右机、左机和发动机方位的定义
Reciprocating internal combustion engines--Designation of the direction of rotation and of cylinders and valves in cylinder heads and definition of right-hand and left-hand in line engines and locations on an engine
GB/T 223.47-1994
Methods for chemical analysis of iron,steel and alloy--The carrier precipitation-molybdenumblue potometric method for the determination of antimony content
GB/T 5009.70-2003
Method for analysis of hygienic standard of epoxy coating for inner wall of food container
GB/T 1874-1995
Phosphate rock and concentrate--Determination of acid insoluble content--Gravimetric method
GB/T 223.17-1989
Methods for chemical analysis of iron,steel and alloy--The diantipyryl methane photometric method for the determination of titanium content