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- The theoretical basis of pulse hammer excitation method used to detect the damage and measure the dynamic elastic modulus of solid wood flooring is briefly explained. 介绍了脉冲锤击法检测实木地板损伤及测定其动态弹性模量的理论依据,并通过有限元模拟与试验验证了其可行性。
- It's found that the measurement of OLTC deviation voltage by excitation method is effective.The corresponding test method and measurement request are put forward. 通过对三台变压器的实际测量和结果分析,认为采用励磁法测量有载分接开关偏移电压是有效的,并提出了试验方法和测试要求。
- It showed that the modal test using hammer excitation method was successful.The method presented can give reference to the similar spatial structure's modal test. 这说明锤击法的模态试验是成功的,研究结果可为同类空间结构的模态试验分析提供参考。
- rectangular wave excitation method 方波激发法
- This article will consider a variety of excitation methods that can be used in active sensor/transducer applications and will show some typical circuits. 这篇文章将考虑激发方法的多样性有可能被使用在主动传感器应用和典型电路中。
- The method seems good but it needs to be tried out. 这个方法似乎不错,但需要试验一下。
- Keep the sun behind you when you take a photo. 拍照时要让太阳留在你的身后。
- He showed me a photo of a family group. 他给我看一张合家欢的照片。
- Many a time have we come across this same photo. 我们多次都见到过这同一张照片。
- He adjusted the shutter before taking a photo. 在照相前,他调整了快门。
- The woman on the photo is my paternal grandmother. 照片上的这个妇人是我祖母。
- He took a lot of photo last sunday, and so do I. 他上星期照了许多照片,我也一样。
- The photo made him quite attractive. 照片把他拍得相当英俊。
- That photo is a good likeness of David. 戴维那张相片照得很像。
- Perhaps his nerve is naturally too dull to admit of any excitation. 大概他的神经天生就很迟钝以至不容有任何刺激的余地。
- He hit upon a photo taken ten years ago. 他偶然发现一张十年前拍的照片。
- The photo shows her dressed in black. 在这张照片里,她穿著黑衣服。
- I can't claim infallibility for this method. 我不敢说这方法绝对有效。
- I got her in focus before I took the photo. 我在拍摄前先用镜头把她对清楚。