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O 开头的英语单词（共 89,563 个）
orifice of passage(of a fan)
扇风机等孔积
orifice of throat
喉部孔口
orifice of ureter
输尿管开口
orifice plate flowmeter
孔板流量计
orifice plate nozzle
[动力] 孔板式喷油嘴
orifice plate steam trap
[化] 孔板式冷凝水排除器
orifice plug
流圈，孔板
orifice restriction
锐孔的收缩
orifice restrictor
孔口节流器
orifice ring
(供料机的)出料口,料碗
orifice ring holder
[机] 料碗壳
orifice ring mark
[机] 料碗印
orifice set
流装置
orifice size
节流面积
orifice sleeve
节流套
orifice spillway
孔口溢洪道
orifice spring
流孔弹簧
orifice standard
标准流孔