单词	特征标号表
释义	特征标号表 mark sheet
随便看	spring safely spring safety hitch spring safety-hook spring safety-hook haberdashery spring safety link spring safety valve spring-safety valve spring sag spring salmon Springs and autumns passed unheeded spring sandstorm spring-sapping spring saturating rain springs back spring seat bearing spring seat bearing adjusting nut spring seat bearing cap spring seat cap gasket spring seat centerline spring seat center line spring-seat chair spring seating spring scale spring scales spring scale with stabilized pan