小口徑 (siu2 hau2 ging3) — small-bore; small-calibre in Cantonese
siuˊ²小hauˊ²口ging˗₃徑简 小口径
Mandarin Pinyin: xiao3 kou3 jing4
Meaning of 小口徑
nounsmall-bore; small-calibre
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