双变量分析用来评估高病死率的风险因素以及确定从出疹到病死的时间。
Bivariate analyses were performed to assess the risk factors for a high CFR and determine the time from rash onset until death.
双辊挤浆机是集洗涤、脱水、置换和压榨于一体的洗涤设备，具有较高的出浆浓度和提取率。
The double roll press is a washing equipment which assembles washing, dehydration, substitution and press with high pulp concentration and extraction yield.
然后又重点对航姿数据的获取方法和控制率进行了研究，设计出用双矢量法改进的捷联航姿解算方案和模糊pd控制方法。
Attitude and then focus on methods of data acquisition and control rates were studied, designed a two-vector method with improved AHRS Solution program and fuzzy PD control method.
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