查询词典 data base

Fair ball:A bat ted ball that first strikes the ground or leaves the playing field beyond first or third base within the foul lines or that is within the foul lines as it bounces past first or third base or that comes to rest or is touched by a fielder in front of first or third base within the foul lines.

&界内球：棒球比赛中落在内场边线内的击球，或先触到外场场内或经过第一或第三垒滚进外场场内的击球。&

The company selected one of the world's seven major grape coast of Yantai Penglai City as a production base, grape planting base, with an annual output of 15,000 tons of the two international advanced equipment and bottling wine fermentation production base.

公司选定世界七大葡萄海岸之一的烟台蓬莱市作为生产基地、葡萄种植基地，拥有年产两1.5万吨的国际先进酿酒发酵设备和灌装生产基地。

The same better common-base and common-emitter properties were observed. Basically, the all-organic metal-base transistors may also be seen as to be a permeable-base transistors, similar to the inorganic/organic hybrid transistors.

研究表明，全有机金属基极晶体管表现了和无机/有机混合型金属基极晶体管相似的特性，其从本质上说也是一种渗透型金属基极晶体管。

The main products are SF-1 (as the base plate of the middle sintering Copper Balls powder, surface modified PTFE); SF-2 (plate as the base of the middle sintering Copper Balls powder, surface modified POM); JDB (For brass, bronze, iron-based body, inlaid solid lubricant); dual-metal (steel as the base for the various models of the surface of copper); production of various enterprises have also filled with PTFE, the curve of bearings, bearing powder metallurgy, by Chun-for the Pistons, Piston Ring, ethylene tetrafluoroethylene ring, ring.

主要产品有SF-1（钢板为基体中间烧结铜球粉，表面为改性聚四氟乙烯）；SF-2(钢板为基体中间烧结铜球粉，表面为改性聚甲醛)；JDB（为黄铜、锡青铜、铸铁为基体，镶嵌固体润滑剂）；双金属（钢板为基体表面为各种型号铜）；企业还生产各种填充四氟带、曲线轴承、粉末冶金轴承、减震器活塞、活塞环、四氟乙烯密封圈、环。

Methyl methacrylate dental base resin was the most frequently used clinical dental base resin because of its good physical, chemical, mechanical and biological properties. Heat treatment was an indispensable step in the manufacturing of dentures with MMA base.

甲基丙烯酸甲酯义齿基托材料因其具有良好的理化、机械和生物性能及稳定的色泽、易于加工成型等诸多优越性一直被广泛应用，目前仍是临床上最常用的义齿基托材料，而加热聚合则是该材料固化不可缺少的步骤。

It was also found base transversion had a extremely high ocurrence frequency in the single base substitution mutants when the plasmid was replicated in FL-FEN-1〓 cell or MNNG pretreated FL-FEN-1〓 cell, while in all mutants with multiple base substitution there were at least one transversion mutation taken place.

分析还发现，在FL-FEN-1〓细胞自发突变和非定标突变含有单碱基替换突变的突变子中，碱基颠换的发生率极高，而在FL-FEN-1〓细胞自发突变和非定标突变的多碱基替换突变子中，每个突变子均至少含有一个碱基颠换突变。

A frameshift mutation at base position 217 of exon 1 and a T/C missense mutation at base position 59 of exon 3 were found in Yingjing angora rabbit with a high frequency; a T/C same-sense mutation at base position 3 of exon 3 was found with similar frequency in three rabbit breeds.

在外显子1的217位检测到由TCT三碱基插入引起的移码突变，在外显子3的59位和3位分别发生了错义突变由T→C和同义突变由T→C。通过计算发现各位点不同的基因型和等位基因频率在3个兔品种中存在较大的差异，位点A、B在长毛兔和肉兔中均有各自的优势基因型和等位基因。

Optimal mixing ratio of SRA as delay forming agent in cement treated base is 0.05%-0.06%; the influence of compacting delay on strength and dry density of road base may be reduced by SRA additive, forming time may be delayed to 9h; after the forming time is delayed to 4h, 6h and 9h, the strength and dry density shrinkage of cement-treated base with SRA admixture are much less than that of those without SRA.

SRA用作水泥稳定粒料路面基层的延迟成型剂的最佳掺量在0.05％～0.06％：用SRA可降低因延迟压实对水泥稳定粒料基层的强度和干密度的影响，可把延迟成型时间延长到9h；在成型延迟4h，6h，9h后，掺入SRA的水泥稳定粒料的强度和干容度损失明显小于未掺外加剂的混合料在相同延迟成型务件下的强度损失。

In addition, in-situ infrared spectroscopy provides the information about the nature of the surface acid and base sites. For example, Lewis acid and base sites on metal oxides are coordinatively unsaturated metal cations and oxygen anions, respectively, while Brinsted acid and base sites are the hydroxyl groups on the surface.

结合原位红外光谱，还能够详细地了解表面酸碱中心的性质：金属氧化物表面的Lewis酸中心和碱中心分别是表面配位不饱和的金属离子和氧负离子， Brinsted酸中心和碱中心则是金属氧化物表面的羟基。

Data mining, known as Knowledge Discovery in Databases, is defined as the nontrivial extraction of implicit, previously unknown, and potentially useful information from a great volume of data accumulations. It uses machine learning, statistical and visualization techniques to discover and present knowledge in a form being easily comprehensible to humans. Data mining is an advanced data processing technique.

数据挖掘是在数据和数据库急剧膨胀的背景下，为解决"人们被数据淹没，但却饥饿于知识"这种困境而产生的，也是数据库技术、人工智能技术、统计技术、可视化技术等发展的结果，其目的就是从大量的、不完全的、有噪音的、模糊的数据中提取出隐含在其中的潜在有用的可信、新颖并能被人理解的信息和知识，它是一种高级的数据处理过程。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。