Some economists also express doubts as to the applicability of Modern Portfolio Theories. Consider this comment by a thought leader in MPT, William sharpe.
一些经济学家还对现代投资组合理论的适用性表示怀疑。
Microwave Plasma Thruster (MPT) is a new type of electro-thermal thruster, which has widely applied prospect because of its high specific impulse, long lifetime, low plume contaminant and so on.
微波等离子推力器（MPT）是一种新型的电热型推力器，它具有比冲高、寿命长、羽流污染小等优点，具有广阔的应用前景。
The MPT Series features close-coupled construction similar to the MP Series, but uses a regenerative turbine vane impeller.
该设备结构紧密，除了使用一款回热式透平推进器以外，与MP系列泵很相似。
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