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- dead center mark 死点标记
- The dead center, being a stationary bearing point, must be lubricated. 由于是固定的支承点，死顶尖必须润滑。
- The arrow hit the target dead center. 那支箭正中靶心。
- Dramatic dust lanes that run across the galaxy's center mark Cen A. 横贯过半人马座A中央的显著尘埃带是这个星系的重要特点。
- The dead center,being a stationary bearing point,must be lubricated. 由于是固定的支承点，死顶尖必须润滑。
- Yet monarchs of old always dined dead center and many time in public. 然而，古代的帝王经常是公然地坐在正当中进餐。
- Two TDC (Top Dead Center) sensors are mounted at the rear of the single camshaft. 两个上死点的传感器安装在凸轮轴的后面。
- To learn an inside out swing stand at the center of the baseline by the center mark. 学习内外挥拍,藉由中心标示站在底线的中心。
- I was sitting in the dead center of the room so when I left early, everyone noticed. 我坐在正当中,所以提早离开时,全屋的人都注意到了。
- The stroke is the distance the piston travels from BDC (Bottom dead center) to TDC(top dead center). 行程是活塞从下止点运行到上止点的距离。
- Yes,of course. The server stands behind his own baseline,to one side of the center mark,and the hits the ball over the net into whichever service court is diagonally opposite. 当然可以，发球者站在自己场地底线中间标志一边的后面，把球击到球网对面同自己所处位置成对角一的那个接发球区。
- But dead center is no dead zone: Billions of organisms called thermophiles flourish in the scalding water. 但是温泉的中央也并不是死气沉沉，数十亿的嗜热性生物在滚烫的温泉水中活跃着。
- The server stands behind his own baseline,to one side of the center mark,and then hits the ball over the net into whichever service court is diagonally opposite. 发球方站在自己场地底线中间标志一边的后面，把球击到球网对面同自己所处位置成对角线的那个接发球区。
- The stroke is the distance the piston travels from BDC (Bottom dead center ) to TDC(top dead center ). 行程是活塞从下止点运行到上止点的距离。
- For the first point of each game,he stands to the right of the center mark to serve. For the second,to the left,for the third back to the right,and so on alternately. 每场比赛的第一球站在中间标志的右边发球，第二次发球则在左边，第三次又回到右边，如此交替进行。
- This spark must occur near the end of the compression stroke, as the position approaches top dead center (TDC). 火花应该在接近压缩行程终了的时候产生，即活塞位于接近上止点（TDC）。
- For the first point of each game,the server stands to the right of the center mark to serve,For the second,to the left,for the third back to the right,and so on alternately. 每局比赛的第一分球站在中间标志的右边发球，第二次换到左边，第三次又回到右边，如此交替进行。
- The server stands behind his own baseline, to one side of the center mark, and then hits the ball over the net into whichever service court is diagonally opposite. 发球者站在自己场地底线中间标志一边的后面，把球击到球网对面同自己所处位置成对角线的那个接发球区。
- The trailing edge of the fourth notch, which causes the pulse, is four degrees before top dead center (TDC) of the corresponding piston. 产生的脉冲的第四凹槽的后缘，位于相应的活塞在前上死点（TDC）4度的位置的位置上。
- For the first point of each game, he stands to the right of the center mark to serve. For the second, to the left, for the third back to the right, and so on alternately. 每场比赛的第一球站在中间标志的右边发球，第二次发球则在左边，第三次又回到右边，如此交替进行。
