Some characteristics of vegetative organs of Yucca gloriosa are relative to drought resistance.凤尾兰营养器官某些特征与抗旱性有关.Anatomical structure of Yucca gloriosa was observed with the optical microscope by paraffin method.利用石蜡切片,在...
The mechanism, equipments and feature of mechanical alloying technology were introduced briefly.综述了机械合金化的原理 、 设备和特性及其对材料的影响.Brittleness is often a result of alloying.脆性往往是合金化的一种结果.Alloying elements will inhibit the forma...
她看着他刨平一块胡桃木板。She watches him plane the surface of a walnut board.他刨平了这块木板.He planed the board smooth.那位木工用刨子刨平了一块木板.The carpenter evened a board with a plane....