The device provides extreme sensitivity through a small range around the null point . 此装置在零点附近很小一段范围内具有极高的灵敏度。
2.
The metaphase plate would thus be the null point between two equal but oppositely directed and acting groups of kinetochore tubules . 中期板大概是两个相等而方向相反的放射状着丝点微管群之间的平衡点。
3.
The null point shift in three - phase load is studied by using the equation of circumference and an arc and the changing law of the null point shift is discussed qualitatively 运用圆弧方程和圆图分析了三相负载中点位移的特性，定性讨论了中点位移的变化规律，这对加深理解中点位移和实际应用有参考意义
