形成混合沉积的条件是具备碳酸盐和硅质碎屑两类物源、活跃的水动力和干湿交替的气候，此外，海平面的相对波动也会造成积极的影响。
Occurrence of both carbonate and siliciclastic sources, active hydrodynamic regimes, alternate dry and wet climates, and the fluctuation of sea level are main factors for forming mixed sediments.
动力定位系统是一种闭环控制系统，采用推力器来提供抵抗风、浪、流等作用在船上的环境力，从而尽可能使船舶保持在海平面要求的位置上。
The dynamic positioning system is a closed loop control system which resists against the disturbance by wind, wave, and current with the help of thrusters on the vessel.
这个新的大地水准面地图对于研究海洋环流、海冰动力学，海平面变化和地震会是有用的。
The new geoid map will be useful for studying ocean circulation, ice dynamics, sea-level change and earthquakes.
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