译：JB/T 3055-1991

译：QJ 2365-1992 Hex head bolt with holes at the head

译：SJ 3115-1988 Cold press dies--Punch holder of guide plate

译：QJ 2220.5-1994 The testing methods for coating electrical insulation performance include testing the dielectric loss tangent under the frequency of AC power supply (including AC sine wave and step-up type AC voltage), audio frequency and high frequency

译：HB 7030.6-1994 Positioning and clamping element for fixture universal components V-clutch jaws

译：SJ 3086.2-1988 General die sets for blanking die--Round punch

译：SJ 3083.3-1988 General die sets for blanking die--Clamps

译：SJ 2992.2-1988 Combined dies--Rotary pan

译：HB 6786-1993 Aha, the question seems to be asking for the translation of "2000 times air displacement meter inner diameter measuring head (D>18~24)" into English. Here's my translation: "2000 times air displacement meter inner diameter measuring head (diameter greater than 18 to 24 mm)." If you have any other questions or need help with any other English translation, please let me know!

译：QJ 1896.6-1990