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- BTDC Before Top Dead Center 在上止点前
- 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。
- before top dead center 上止点前
- The spark is therefore timed to occur before the piston reaches top dead center, otherwise maximum pressure would not be reached in time. 因而，在活塞到达上死点前，火花便会发生，否则就不可能适时达到最高的压力。
- 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。
- 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。
- 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。
- 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）。
- Upper limit of the piston movement is called as TDC (top dead center), and its lower limit is called as BDC (bottom dead center). 活塞运动的上限称为TDC(上止点)，下限称为BDC(下止点)。
- The top dead center (TDC) has a great effect on the measurement and analysis of combustion process of internal combustion engines. 在示功图测量分析中,精确标定上止点相位是必不可少的重要环节。
- The Bore is the diameter of the cylinder. The stroke is the distance the piston travels from BDC (Bottom dead center ) to TDC(top dead center). The Bore is always mentioned first. 内径指的是气缸的直径;行程是活塞从下止点运行到上止点的距离。表述时,内径总是写在前面。
- Design of Corrector for Top Dead Center 上止点找正仪的设计
- 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。
- Algorithm Design on Computing Dynamic Top Dead Center with Compressing Line Method 压缩线法求动态上止点
- after top dead center 上止点后
- top dead center 上死点
- 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。
- As a matter of fact, I've never been there before. 事实上我从未到过那儿。
