孔

According to the influence of each laser parameter on processing and the advantage that a laser can achieve high laser quality nearby the last threshold,AOM Q-switched Nd∶YAG pulsed laser is adopted for microdrilling. As a result,the 15μm microhole in 0.7mm-thick zincification plate steel is obtained,and the ratio of depth and width is over 50,100% drilling rate is acquired.

基于各个激光参数对加工微孔的影响以及激光在阈值附近工作时光束质量较好的优点，采用声光调QNd∶YAG脉冲激光器进行阈值附近的微孔加工，在0.7mm的镀锌钢板上获得了直径为15μm的微孔，深径比超过50，打孔成功率为100%。

The term"the occupied volume fraction"was introduced to investigate the acquirability of mesoporous transition metal oxide by comparing the synthesis of mesoporous titanium and mesoporous silica.

论文对比了介孔SiO2和介孔TiO2的合成，通过引入占有体积分数这个概念考察了过渡金属氧化物介孔材料合成困难的原因。

The composition of Fe-Co and Fe-Co-Mn alloy is analyzed by using Electron Probe Micro Analysis and the magnetic properties of porous alumite film in which Fe-Co and Fe-Co-Mn alloy electrodeposited are measured by a Vibrating Sample Magnetometer .

本论文通过使用多种现代测试技术，如：扫描电镜、透射电镜、电子探针X射线能谱、X射线衍射、电子衍射分析和振动样品磁强测试等，对铝阳极氧化膜的形貌、纳米级微孔内Fe—Co和Fe—Co—Mn合金的晶体结构、Fe—Co和Fe—Co—Mn合金在纳米级微孔内的电沉积工艺以及纳米级微孔内Fe—Co和Fe—Co—Mn合金的磁性进行了系统的研究。

Based on the microstructure of scale, there are three sorts of scales, including angustifoliate shape, latifoliate shape, and round-leaved shape.

根据鳞片的超微结构，可将鳞片分为拱桥形、棋盘形、单列筛孔形、多列筛孔形和双列筛孔形5种。

Then, a novel biporous resin was prepared with granules of sodium sulfate and toluene and n-heptane as porogenic agents based on the concept of a novel porogenic mode, cooperation of solid granule and solvent.

在此基础上，采用固体颗粒与有机溶剂联合致孔模式，以硫酸钠颗粒为固体致孔剂，制备新型双孔离子交换剂。

The application of the blasthole model in some aspects such as short term plan, ore control, modification of production plan and production control are summarized.

介绍了露天矿生产炮孔数据及地表现状数据的收集整理，阐述应用MINTEC软件建立生产炮孔模型的过程，对炮孔模型在短期计划、矿石控制、生产计划的平衡与调整及生产控制等方面的应用作了总结，并提出了看法。

This drill rig is suitable to drill blasthole,anchor-cable hole and grouting hole with φ85-φ125mm diameters,0-50m depths and any dip angle of 00-3600 in various rock formations in underground mines,open pit mines,water conservancy projects and other engineering such as hydroelectric,building,harbour,airport,road construction and consolidation of slope etc..especially suitable for the operation in narrow underground space.

其导轨架较为短小，占地空间小，适用于矿山井下和露天、建筑、水利水电、港湾、机场、道路施工及边坡加固等工程，尤其适合井下狭窄场地作业。可在各类岩层中钻凿φ85-φ125mm、深度0-50米，钻孔倾角00-3600任意角度的炮孔、锚索孔和灌浆孔。

The edge metal of round hole often splits if the burring factor is less than the limiting burring factor.

当孔缘处变形程序超过极限变图 1 圆孔翻边示意图形程度时，孔缘处就会发生破裂。

The influence of the opening ratio and the opening mode of the rectifying ring on the gas distribution effect was also measured with a calandria manometer.The flow through the pores of the center pipe could be uniformly distributed by adjusting the opening ratio of the rectifying ring.

利用压力排管研究了整流环开孔率和开孔方式对均布效果的影响，发现通过调整整流环周向开孔率可以实现内环射流流量均布。

This paper puts forward that making the openings of castellated beam s rounded rectangular can avoid the corner stress centralization of the hexagon castellated beam and the expansion rate loss of the round castellated beam .

提出将蜂窝梁孔洞做成角部修圆的矩形，可以避免六边形孔蜂窝梁的孔角应力集中和圆孔蜂窝梁的扩张比损失。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。