front sight meaning in Chinese

前瞄准具
前准星
照准框
准星

Corn front sight
粒形准星
The fire " 3 . 1 straight lines " in the fire competition , the athlete need to obtain the result , must grasp " 3 . 1 straight lines " the principle , namely the eye saw to the aiming point , the point of front sight and the rod gap three superpositions carries on the fire again
射击“三点一直线”在射击比赛中，运动员要取得好成绩，就必须掌握“三点一直线”的原理，即眼睛看到瞄准点、准星尖和标尺缺口三者重合再进行射击。