Changes in the beam intensity will produce changes of the count rate. 电子束强度变化将引起计数率的变化。
The textiles had good oil-and water-repellency and washing fastness properties after finishing, and exhibited little change in air permeability and tearing strength. 织物整理前后的透气性及撕裂强度变化不大，较好地保持了织物原有的透气性能及撕裂强度。
