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door knocker of base metal 门球,贱金属制
It was shown that the impact toughness of HAZ is 50% of base metal. 结果表明，该钢的焊接热影响区的冲击韧性较母材降低50%25以上；
The supposed conversion of base metals into gold or silver in alchemy. 转变在炼金术中假想的从贱金属到金或银的转变
TiAlN film coating may have a good potential to increase the biocompatibility of base metal alloy substrate. 氮化铝钛薄膜具有良好且可增加卑金属合金基材表面生物相容性的潜能。
The weld overlay cracking can not propagated into the base metal, due to highly fracture toughness of base metal. 相脆化与使用时的氢脆可使堆焊层金属的塑性降到很低值，使得堆焊层的高应力部位萌生开裂。
One that raps or strikes, especially a door knocker. 敲击者敲击或打击的人，尤指敲门者
As to X60 SSAW pipes, the strength of base metal and weld was almost the same, but a big difference was found between the base metal and weld of X52 ERW pipes. X60 SSAW焊管母材与焊缝强度基本相当,X52 ERW焊管母材与焊缝区域存在着较大的强度差异。
One that raps or strikes,especially a door knocker. 敲击者敲击或打击的人，尤指敲门者
In transient crack zone, the SEM fractographs of base metal consisted of equal-axis ductile voids, the fusion zone was mainly consisted of course transgranular cleavage facets. 在瞬断区，母材由等轴韧窝组成，而熔合区主要为粗大的穿晶解理平面。
Comparing with the coarse dendrite microstucture of base metal, the eutectic Si particles are homogeneously dispersed in nugget zone without visual defects. 与母材相比，焊核区的硬度分布较均匀，变化幅度小，拉伸试验大都断裂在接头热影响区处，接头的抗拉强度可达母材的70%25左右，表现出了较好的机械性能。
The weld overlay cracking can not propagated into the base metal,due to highly fracture toughness of base metal.The serviceability of hydroprocessing reactors is not affected b... 由于壳体基材有高的断裂韧性,堆焊层裂纹不会扩展到壳体基材,堆焊层裂纹不影响加氢反应器的使用性。
The relative degree of mixture with a base metal. 成色，纯度和基本金属的相对混合程度。
The H2S near the welds of base metal will result in HIC or embrittlement for the gas pipeline, and with the growth of H2S content in the gas, the trend of HIC will tend to be obvious. 在靠近焊缝的母材中H2S容易诱发氢致裂纹和脆化，并且随着天然气中H2S含量增加，氢致裂纹的倾向会加大。
A medieval chemical philosophy having as its asserted aims the transmutation of base metals into gold, the discovery of the panacea, and the preparation of the elixir of longevity. 炼金术，炼丹术中世纪的一种化学哲学。其声称的目标是将一些基本金属转变为金子，发现万灵药及制备长生不老药
Because of the influence of dilution of base metal and carbide precipitation of deposited metal, the hardness of deposited metal decreases with the increase of the tempering temperature. 由于母材稀释的影响和熔敷金属组织中的合金碳化物析出，熔敷金属的硬度随回火温度的升高而降低。
This cast iron Bird Door Knocker, with its rustic bronze finish, provides a friendly introduction to your home. 这个铁啄木鸟门铃，黄铜工艺制作，对来访者来说是很友好的方式。
Abstract: In rock pyrolysis when the content of base metals and base earth metals is relatively high ionization interference will frequently occur. 文摘:在岩石热解分析中当岩样碱金属和碱土金属离子含量较高时,经常发生离子化干扰的影响。
Since her using it, a commemorative brass plaque has been added to the door along with a brass owl door knocker. 自从她使用它，黄铜纪念牌匾已添加到大门上，以及一个黄铜猫头鹰的大门钥匙。
Crude oil prices up by the impact of base metals prices also rose. On the same day, the wind vane includes mining shares index rose Top 5. 受原油价格大涨的影响，基本金属价格也随之走高。当日，矿业股囊括了风向标指数涨幅排行榜前5名。
Her chest rose with indignation, but before she could find a reply, the door knocker sounded again and Albert went to answer it. 她的胸一上一下，都是气的，可是她还没有想好什么样回答，就又有人敲门了，阿伯特去开门了。