文物揭取要掌握好揭取时的干湿程度。刚出土的纺织物,如果在饱水状态下,几乎没有机械强度。纤维细胞过分膨胀,纤维间的吸附力因水的作用加强,这时揭取会使纤维细胞破裂,织物损坏如烂泥状。另一方面,如果纺织品文物出土时没有及时处理,放置在过于干燥的环境中,会使织物含水率过低,也不适于揭取。
干湿 dry and wet ; DRY WET ; wet and dry
干湿球温度计 catathermometer ; dry and wet bulb thermometer ; psychrometer
干湿表 [气象] psychrometer ; wet and dry bulb thermometer
干湿球湿度计 psychrometer ; wet and bulb thermometer ; dryandwetbulbpsychrometer
通风干湿表 ventilated psychrometer ; aspiration psychrometer ; [气象] aspirated psychrometer
干湿计 psy-chrograph
干湿球湿度表 [气象] wet and dry bulb hygrometer ; psychrometer ; wet and dry bulb psychrometer ; physical hygrometer
手摇干湿表 sling psychrometer
干湿球温度表 dry and wet bulb thermometer ; dry and wet bulb psychrometer ; katathermometer ; pulvation action
干湿球度计 wet and dry bulb hygrometer
但是,气候条件存在波动,造成干湿天气交替,以致可以获取的动植物数量忽高忽低。
There were, however, fluctuations in the climatic conditions, with the consequences that wet conditions were followed by dry ones, so that the availability of plants and animals oscillated brusquely.
盐穹在过去干湿两季交替出现时期开始形成。
Salt domes start during past periods of alternating wet and dry climate.
我们已经拦河筑坝、排干湿地。
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