ball point nib  球形笔尖

Ball point pen  圆珠笔头; 圆珠笔

ball point pen refill  圆珠笔芯

ball point print head  点打印头

ball-point  圆珠笔

ball-point pen  遗传平衡; 圆珠笔

ball-point penetrator  球体贯入度仪

cloisonné design ball point pen  景泰蓝圆珠笔

manufacture technology of erasable ball-point pen and its ink  可擦性圆珠笔及其油墨的制造技术

pen ball-point material  圆珠笔头材料

refill for ball-point pen  圆珠笔芯

Ball’s Point  鲍尔点

ball-control-point  球形控制点

double rows four point contact ball bearing  双排四点接触球轴承

Four Point Contact Ball Bearing  四点接触球轴承

four-point contact ball bearing  四点接触球轴承; 四点接触轴承

four-point contact ball beating  四点接触球轴承

ring and ball softening point  环球法软化点

thin walled four point contact ball bearing  薄壁四点接触球轴承