sine bar正弦: sine杆: shaft; rod; bar弦杆: boom bar; boom element; boom member; boom rod; chord member正弦: [数学] sine◇正弦尺 sine protractor; 正弦曲线 sine curve; sinusoid底弦杆: bottom chord下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:正弦杆，即可在微信中查询翻译
