critical casting speed(Further simulations were performed by them to predict this critical casting speed as a function of section size and working mold length (distance from meniscus to mold exit). 为了预测作为断面尺寸和结晶器工作长度(金属弯月面至结晶器出口的距离)函数的临界拉坯速度，他们进行了进一步的模拟。)
withdrawal speed of strand(A negative strip occurs when the downward velocity of the mold during each cycle exceeds the withdrawal speed of the strand. 在每一振动周期内，当结晶器向下运动的速度超过拉坯速度时即出现负滑脱。)
