Ambient concentrations varied considerably by season.环境浓度随季节而大幅度变化.Another ambient temperature sensor is the vapor - filled bellows.另一种空气温度传感器是充气波纹管.Ambient noise may come from any direction.外界噪声可以来自任意方向....
为建立用ICP -AES 技术分析测定硼铁的方法开展了试验研究.Tests were studied to make an approach to ferroboron by ICP - AES technology.高硼铁 基合金 是一种新型 耐磨 材料.High boron iron - based alloy ( HBIA ) is a kind of new wear - resistant material.氢氧化钠容量法测定...