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Beijing Institute of Technology, Beijing 100081,ChinaIn order to get the high output power, a RF excited diffusively cooled all-metal slab waveguide CO2 laser was reported, in which gas discharge region was constructed by two aluminum side walls and aluminum electrodes. The region dimension was 2 mm height×20 mm width×386 mm length, and the gas composition was CO2:N2:He:Xe=1:1:3:0.26. This technique replaced the old ceramic and metal sandwich waveguide technique.The optimum out power 127 W was achieved from the RF excited diffusively cooled all-metal slab waveguide CO2 laser with the longitudinal voltage uniformity distribution technique and scaling area technique. The electro-optic conversion efficiency was about 14%.

为了获得较高的激光输出功率，介绍了射频激励扩散冷却全金属板条波导CO2激光器，放电区域由左右两个铝合金壁和上下两个铝合金电极构成，放电区域高2 mm，宽20 mm，长386 mm，工作气体混合比CO2：N2：He：Xe=1：1：3：0.26，该技术代替了过去的金属陶瓷结构，结合纵向电压均匀分布技术和面增比技术，获得了127 W的激光输出功率，光电转换效率高达14%。

A new method— digraph method was proposed for comprehensive evaluation of machinability of ceramic materials.

提出了一种陶瓷材料可加工性综合评价的新方法———有向图法，并制备出六种不同CePO4含量的Ce-ZrO2/CePO4复合陶瓷材料，进行了可加工性评价和钻削加工试验。

Lead in solders for the soldering to machined through hole discoidal and planar array ceramic multilayer capacitors.

通过盘状及平面陈列陶瓷多层电容器的焊料所含的铅；2002/691/EC

We also distribute professional tubular and discoidal ceramic capacitors.

此外，爱力创公司亦设计制造精密金属塑胶元件，以满足客户定制应用的要求。

EC 24. Lead in solders for the soldering to machined through hole discoidal and planar array ceramic multilayer capacitors.

通过盘状及平面陈列陶瓷多层电容器的焊料所含的铅；通过盘状及平面陈列陶瓷多层电容器的焊料所含的铅

O 24. Lead in solders for the soldering to machined through hole discoidal and planar array ceramic multilayer capacitors.

通孔盘状及平面阵列陶瓷多层电容器焊料所含的铅。

Discoidal and planar array ceramic multilayer capacitors.

通过盘状及平面陈列陶瓷多层电容器的焊料所含的铅

"Lead 铅",24,Lead in solders for the soldering to machined through hole discoidal and planar array ceramic multilayer capacitors.

EC 通孔盘状及平面阵列陶瓷多层电容器焊料所含的铅

However, the main aim is discontinuously reinforced titanium matrix composite prepared by traditional technique such as powder technology and liquid metallurgy, where the ceramic particles are directly incorporated into solid or liquid matrices respectively.

人们对其制备工艺、微结构、力学性能等进行了一系列的研究，而这些研究的主要目标为外加法制备的钛基复合材料。

Because I have the flexibility of a ceramic tile, I tear both hamstrings, dislocate my head, rupture my spleen (don't ask me why) and crawl home on my hands and knees.

因为我有瓷砖一样的柔软性，我两腿腿筋断裂了，脖子脱臼了，我的坏脾气都出来了，最后我四肢着地地爬回了家。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。