Monday, March 25, 2024
Sunday, April 7, 2024
Tuesday, May 7, 2024
Tuesday, May 7, 2024
Sunday, April 7, 2024
问题:什么叫磁带的复印效应?产生复印效应的原因有哪些?怎样防止或减弱该效应的产生?
Saturday, October 14, 2023
Thursday, February 8, 2024
Tuesday, May 7, 2024
问题:什么叫磁带的复印效应?产生复印效应的原因有哪些?怎样防止或减弱该效应的产生?
Saturday, October 14, 2023
Sunday, April 7, 2024
Tuesday, May 7, 2024
Sunday, April 7, 2024
Monday, March 25, 2024
问题:什么叫磁带的复印效应?产生复印效应的原因有哪些?怎样防止或减弱该效应的产生?
Sunday, March 17, 2024
Monday, March 25, 2024
Tuesday, May 7, 2024
Sunday, April 7, 2024
问题:例题:某档案库房上午8时,测得库内温度为24℃,相对湿度为71%;库外温度为20℃,相对湿度为74%。问是否能通风降湿?
Sunday, April 7, 2024
Tuesday, May 7, 2024
问题:冷冻去湿机是怎样去湿的?它适合于在什么温湿度条件下使用?
Monday, March 25, 2024