选用空气相对湿度H和垂直载荷G为加速应力，用加速寿命试验法对瓦楞纸箱寿命进行研究。
The lives of corrugated boxes is studied by the means of accelerated life test. The air relative humidity (H) and vertical load(G) are selected here to studied the lives of corrugated boxes.
采用土钻法和盆栽试验研究了渭北地区主要造林树种的垂直根系分布特征及其抗旱性。
Methods of soil auger and pot experiment were used to research vertical root distributions and drought resistance of main planting tree species in the Weibei loess plateau.
采用土钻法和盆栽试验研究了渭北地区主要造林树种的垂直根系分布特征及其抗旱性。
Methods of soil auger and pot experiment were used to research vertical root distributions and drought resistance of main planting tree species in the Weibei loess plateau.
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