介绍了一种改进的交联密度测定仪。
An improved cross link density measuring apparatus is introduced.
海绵密度测定仪是领先的固体密度测量仪器。
The sponge density measuring instrument is a solid density measuring instrument leading.
海绵密度测定仪主要用于各种海绵原料及海绵制品的密度测量，操作简单，精确度好。
The sponge density measuring instrument is mainly used for measuring the density of various sponge, sponge products raw materials and has the advantages of simple operation, good accuracy.
方法对2 80例不同孕期的孕妇用超声骨密度测定仪测量跟骨骨密度（BMD） ，同期选择30例正常健康非孕期妇女做对照组。
Methods 280 cases gravidas in different gestation were determined in calcaneum bone density by using the apparatus. 30 cases normal healthy non-pregnant women were selected as the control group.
方法对2 80例不同孕期的孕妇用超声骨密度测定仪测量跟骨骨密度（BMD） ，同期选择30例正常健康非孕期妇女做对照组。
Methods 280 cases gravidas in different gestation were determined in calcaneum bone density by using the apparatus. 30 cases normal healthy non-pregnant women were selected as the control group.
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