alternating group four points scheme  交替分组四点格式

Four points bending  四点弯曲

four points coplanarity  四点共面

four-points boundary value problem  四点边值问题

Power acupuncturing in four points on thigh  股四针加电

four feed points  4馈点馈电

four key points  四点

Supported on four corner points  角点支承

The Stabilizing Four-Shen Points  定神针

The Four-Shen Points  四神针

four match four all  四合四统

four-energy-level laser (=four level laser)  四阶雷射

four-quadrant switches’ four-step commutation  双向开关四步换流

Boiling points and melting points  沸点和熔点

Four Clean-ups Campaign  (4,5-二氮杂-9-亚芴基)碳60; 如有人声称他─

four clean-ups movement  任何人─

four good model of Shaanxi apple  任何人不得─

Four Hand construction  任何人─

four in one construction  任何人均不得─