标准摘要
[中文适用范围]： 由粉煤制成的铅笔形式的测试件在位于炉中的钢制蒸馏器中以恒定速率加热，温度监控系统已使用两种已知熔点的参考金属预先校准。 连续观察放置在测试件上的岩钉的水平变化，并产生记录煤的膨胀特性的特征。 [外文原描述]： A test piece, in the form of a pencil, prepared from powdered coal is heated at a constant rate in a steel retort positioned in a furnace, the temperature monitoring system having been previously calibrated using two reference metals of known melting points. The change in level of a piton resting upon the test piece is observed continuously, and record is produced which is characteristic of the swelling properties of the coal.
英文名称Hard coal — Determination of the swelling properties using a dilatometer