Cox models with robust standard errors were used to compare the hazard of death among children under 5 years of age in project and control villages.
采用Cox稳健标准误差模型来比较项目村庄和对照村庄五岁以下儿童的死亡风险。
Planning and conceiving the hazard degree of quantified and classified hygiene surveillance, control of standard, standardization, and assessment mode of implementing effect.
策划与构思卫生监督量化分级管理风险度与水平控制、标准细化及实施效果评价模式等问题。
Low standard is a serious hazard to furniture industry. This article elaborates the significance of setting up the standardized system for furniture industry and its methods.
低标准化对家具工业产生了严重的危害。本文论述了在家具工业中构件标准化体系的重要性及其方法。
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