表面地

How to acquire and extract surface electromyography expediently and effectively had been one of the key factors to apply the SEMG.

摘 要：如何方便有效地采集提取表面肌电信号已成为SEMG应用的关键技术之一。

Through an analysis of the electromagnetic force on the electric heated rod, the authors work out the equation for calculating the electromagnetic force on unit area of the rod, and indicate that radial vibration of 100Hz will occur when the rod is in operation, which have little effect on the strength and sealing of the rod owing to minor amplitude.

电热杆的交流阻抗远大于导线的电阻，因此主要发热体为抽油杆，可快速有效地加热杆外的原油，而导线不会过热，有利于导线的绝缘与保护。通过对电热杆所受电磁力的分析，推导出了抽油杆内表面单位面积上所受电磁力的计算公式，从而得知电热杆工作时将产生沿径向向外的径向振动，振动频率为100Hz。但由于振幅较小，这种振动不会对抽油杆的强度和密封产生明显的不利影响。

High-resolution 〓H-NMR spectra were used to confirm the formation of the ICs, and XPS spectra were used to corroborate the formation of S-Au bonds. The significantly improved"reversible"voltammetric responses and the reproducible surface coverages of (2.4±0.2)×10〓 and (2.2±0.2)×10〓 mol/cm〓 obtained for SAMs of β-CD/C〓VC〓SH and α-CD/C〓VC〓SH, respectively, indicate that the intercalated CD can effectively dilute the surface viologen groups and weaken the intermolecular interaction, giving a wellordered and viologen-containing SAM with a determinate surface coverage.

高分辨〓H-NMR谱确证了预期包络物的形成；XPS谱确证了包络物电活性自组膜和S-Au共价键的形成；明显改善的&可逆&伏安响应和重现的紫精基团表面覆盖度[对β和α分别为(2.4±0.1)×10〓和(2.2±0.1)×10〓mol/cm〓]，表明嵌入的环糊精可有效地&稀释&紫精基团，在很大程度上减弱它们之间的相互作用，形成了完备的和有确定紫精覆盖度的包络物电活性自组膜。

It was suggested that quantitative structure parameters or molecular descriptors can give effective prediction of the critical volume.

研究表明，分子体积、分子支链化程度以及分于表面的静电分布等定量结构参数可以有效地估算有机物的临界体积。

The main purpose of this study is to develop method for control the chemistry on silicon surface at microscopic scale.

研究工作的目的是发展在微米尺度控制硅表面化学的方法，主要开展了两方面的工作：一、系统地研究了硅和二氧化硅在氟化铵水溶液中的腐蚀规律；二、。。。

Steve Cabral said his family keeps the cake out on the table through the holidays and just pours on more rum whenever the top gets dry, effectively preserving the cake in alcohol.

史蒂夫？卡布拉尔说，在整个圣诞节假日期间，他们家都会把蛋糕放在桌子上随时享用，如果蛋糕表面有点干的话，就在上面撒点朗姆酒，这样在酒中就可以有效地保存蛋糕。

There were a dozen requests for autographs - he knew them at sight; there were professional begging letters; and there were letters from cranks, ranging from the man with a working model of perpetual motion, and the man who demonstrated that the surface of the earth was the inside of a hollow sphere, to the man seeking financial aid to purchase the Peninsula of Lower California for the purpose of communist colonization.

其中有十二封是要他签名的——这类信他一眼就能看出来；还有职业性的求助信，还有一些怪人的信。一个人寄来了可用的永动机模型；一个人证明世界的表面是一个圆球的内壁；一个人打算买下下加利福尼亚半岛组织共产主义侨居地，来请求财政援助。什么人都有。

There were a dozen requests for autographs - he knew them at sight; there were professional begging letters; there were letters from cranks, ranging from the man with a working model of perpetual motion, the man who demonstrated that the surface of the earth was the inside of a hollow sphere, to the man seeking financial aid to purchase the Peninsula of Lower California for the purpose of communist colonization.

其中有十二封是要他签名的——这类信他一眼就能看出来；还有职业性的求助信，还有一些8 tt t8.com 怪人的信。一个人寄来了可用8ttt8的永动机模型；一个人证明世界的表面是一个圆球的内壁；一个人打算买下下加利福尼亚半岛组织***侨居地，来请求财政援助。什么人都有。

The article introduced the measuring technique of the grain size of ceramic alpha alumina, including electronic microscope, Laue X-ray diffraction, nitrogen absorption specific surface area, infrared spectra and grinding method.

本文介绍了电子显微镜、X射线衍射、氮吸附小比表面法、红外光谱结构分析、研磨法等用于陶瓷氧化铝晶粒度测定的情况，通过对比，指出了电子显微镜能够真实地反映微观世界，是多种分析方法的基

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。