泉眼[quán yǎn]
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the mouth of a spring; spring
1. spring opening：spring mass constant 弹簧质量常数 | spring opening 泉眼 | spring point 弹簧辙尖
2. spring opening WESTBANK：spring mass constant WESTBANK 弹簧质量常数 | spring opening WESTBANK 泉眼 | spring point WESTBANK 弹簧辙尖
3. \u0039\u0031\u0031\u67E5\u8BE2\u00B7\u82F1\u8BED\u5355\u8BCD
3. mouthofspring：mouth of shears ==> 冲剪口 | mouth of spring ==> 泉眼 | mouth opening ==> 口孔