据估计，很多人虽然服用维生素，但他们对许多重要维生素的摄入仍然不足。
It's estimated that though many people take vitamins, they are still deficient in many important vitamin compounds.
对连续搅拌釜式反应器（CSTR）的仿真结果表明，该集成故障诊断方法能够对多重传感器故障进行快速准确的分离和估计，并对传感器故障具有容错性。
The simulation for CSTR shows that the presented approach can isolate and estimate the multiple sensor faults quickly and accurately and the integrated system has tolerantability to sensor faults.
重点讨论了单一插补的方差估计与多重插补的简化计算以及使用回答概率的单一插补等。
Then, variance estimates of single imputation, simplified calculation of multiple imputation and imputation using response probability are studied.
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