BHP Billiton Ltd., the world's largest mining company, retreated 2.6 percent to 2,292 pence as base metal prices declined in London.
矿业巨头必和必拓公司股价下跌2.6%，至2292便士，伦敦金属交易所的基本金属价格下跌。
When welding directly to base metal, the base metal shall be no thinner than 1/3 the stud diameter.
当（螺柱）直接焊于母材时，严禁母材厚度薄于螺柱直径的1/3。
The results show that TLP bonding produces a good joint with microstructure and strengths similar to those of base metal.
结果表明，采用TLP连接技术进行钻杆焊接，接头成形好，接头组织与母材相似并连续生长，接头强度、塑性均达到母材水平。
This welding process joints work pieces by melting the electrode and the base metal with the heat from the electric arc between the electrode and the work piece.
它是一种利用焊条与工件之间电弧产生的热量熔化焊条和母材而将被焊工件连接起来的焊接方法。
The microstructure between alloy transition layer and base metal has been studied.
研究分析了合金过渡层与金属基体接合界面组织结构。
Filler materials: For welding, base metal matching filler materials shall be used.
填充材料：对于焊接，应使用与基材相匹配的填充材料。
Other mountings, fittings and similar articles, suitable for furniture, of base metal.
其它架座、配件及类似品，适合用于家具者，卑金属制。
The toughness of HAZ is higher than base metal under appropriate laser welding conditions.
在合适的激光焊接条件下，热影响区韧性高于母材；
Different base metal alloy has the different melting point and linear coefficient expansion.
不同的基底合金具有不同的熔点及线膨胀系数。
The biomineralization of base metal deposits and its geological characteristics are discussed.
着重讨论层控贱金属矿床的生物成矿作用及其有关的地质特征。
Both conditions can be detected by a temper etch (i. e., nital etch) inspection of the base metal.
两种情况在对本体金属的回火蚀刻检查中会发现。
Glass smelt erodes the base metal and dissolves surface oxides, and produces many crystalline phases.
玻璃熔体侵蚀基体金属，溶解表面氧化物，生成大量氧化物结晶相。
The mechanical properties of the weld deposit shall not lie appreciably above those of the base metal.
熔敷金属的机械性能不应高于基材的机械性能。
The interaction and interfacial combination between the intensifying phase and base metal were analyzed.
分析了复合材料中增强相和基体间的相互作用和界面问题。
Ferrous tool materials have iron as a base metal and include tool steel, alloy steel, carbon steel, and cast iron.
黑色工具材料以铁为基材，包括工具钢，合金钢，碳钢，铸铁。
The result shows that the bond between surfacing weld and base metal is metallurgical bond, and bond line is clear.
结果表明，喷焊层与基体是冶金结合，结合线清晰。
Through-thickness cracking also can lead to fatigue or stress corrosion cracking of the base metal beneath the plating.
还会形成穿透型裂纹，造成镀层下本体金属的疲劳或应力腐蚀裂纹。
For the bar and wire endless rolling process, the welded area is required to have similar properties as the base metal.
棒线材的无头轧制工艺，要求焊接部位与基体具有同样的性能。
Seeing through SEM, the base metal of Nickel paste can be accreted hard on the ceramics, and good ohm attachment is formed.
通过扫描电镜(SEM)可以发现镍电极能牢固地附着在陶瓷体上并具有良好的欧姆接触性能。
She was holding a teaspoon in her two hands, pressing her thumbs against it as if measuring her strength against the base metal.
她双手拿著一个茶匙，用拇指使劲按著它，好像同这块普通金属较量力气似的。
The bond between inner plastic lining and steel tube base metal of that steel plastic clad tube is good, and the service life is long.
所生产的钢塑复合管道其内衬层与钢管基体贴合好、使用寿命长。
Nonferrous materials have a base metal other than iron and include aluminum, magnesium, zinc, lead, bismuth, copper, and a variety of alloys.
有色金属材料以不是铁的金属为基材，包括铝，镁，锌，铅，铋，铜和很多合金。
The hydrostatic pressure explosion test on vessel indicates tha both base metal and weld metal have good comprehensive mechanical properties.
容器的液压爆破试验证明，母材和焊接接头具有良好的综合力学性能。
Since laser weld is narrow, and the anode protection effect of zinc on the base metal was not destroyed, the joint has good corrosion resistance.
激光焊缝窄，基材锌层阳极保护作用得以保存，激光焊接板仍具有较好耐蚀性。
WF40 coating is the epoxy glass flake coating with thermal expansion efficient close to that of base metal and high resistance to the thermal shock.
WF 40涂料为环氧型玻璃鳞片涂料，其热膨胀系数与钢质基体接近，因此具有耐热冲击性强等优点。
After solution treatment, the weld grains become coarse along with a large amount of granular precipitates dispersed in weld zone and base metal zones.
经过固溶处理后，焊缝组织晶粒变大，焊缝区和母材区弥散分布着大量的颗粒状析出物。
Physical properties (such as strength, ductility and toughness) are much better in a forging than in the base metal, which has crystals randomly oriented.
锻件的物理性能(如强度、延展性和韧性)远好于基础金属，因为基础金属的晶粒是无序排列的。
Brazing between dissimilar metals, choosing brazing filler metal and flux which is matched with brazing filler metal and the base metal is very important.
异种材料间钎焊，不仅需选钎料，而且对与钎料、母材相匹配的钎剂的选用同样也很重要。
Brazing between dissimilar metals, choosing brazing filler metal and flux which is matched with brazing filler metal and the base metal is very important.
异种材料间钎焊，不仅需选钎料，而且对与钎料、母材相匹配的钎剂的选用同样也很重要。
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