正弦規 (zing3 jin4 kwai1) — a sine bar; a sine angle dresser in Cantonese
zing˗₃正jinˎ₄弦kwaiˉ¹規简 正弦规
Mandarin Pinyin: zheng4 xian2 gui1
Meaning of 正弦規
nouna sine bar; a sine angle dresser
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