美国航宇局约翰逊航天中心的两个中性浮力水池中，航天飞机航天员太空行走训练用的主要是失重环境训练设备(WETF)，以下是航天员对失重环境训练设备提出的改进意见和建议：
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Wetf Tensile Strength 纬向拉力
The industry average for net margin over the last twelve months was 5.5% while WETF was able to post 13% net margin.
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Aggressive growth investors have to like the ever-growing earnings story at WETF.
The valuation picture for WETF shows what you would expect to see for a fast growing company with great potential for future earnings.
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