毒剂震检 dú jì zhèn jiǎn

DEFINITIONS

  1. gas detection

CHARACTERS

毒 dú
HSK 5
poison, venom; poisonous
剂 jì
HSK 6
medicinal preparation
震 zhèn
HSK 5
shake, quake, tremor; excite
检 jiǎn
HSK 3
check; examine