名词 crosshairs:

1. a center of interest

名词 cross hair:

1. either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration

crossarmn.横木crossv.穿过；交叉；杂交；反对；勾掉；碰见；阻挠n.十字架；十字形；杂交动植物；苦难adj.交叉的；相反的；生气的；杂交的cross duplicate network交叉复式网路cross-domain resource跨越地域资源,跨域资源,交叉域资源Cross sub-image block图像交叉分块cross-equatorial flow越赤道气流cross-flow moving bed错流移动床cross sensitivity ratio横向敏感度比cross-section optimum断面优化cross- shaped section十字形截面cross-relation effect交叉弛豫效应crossed helical gearing螺旋齿轮传动