查询词典 Str.

The mechanism ru nning of sustainable development of a ba sin system is analyzed, the index system of sustai nable deelopment and its fundamental str ucture are established.

从静态和动态两个方面对岷江上游流域系统的可持续发展作了综合实证分析。

The STR method is simple to operate,and it deserves to further study and lay the foundation for genetic mornitoring standard of outbred stock zebrafish.

结论鉴于该方法操作简便，通过进一步研究，可为封闭群斑马鱼的遗传质量评价打下基础。

Objective: To study the distribution of genetic polymorphism of VWA, FGA, PENTA E loci in Mongolia population and construct genetic database.

目的 ：了解内蒙古锡盟地区蒙古族人群 VWA、FGA、PENTA E三个 STR位点的遗传多态性分布，获得相应多态位点的群体遗传学数据。

Under the circumstances of China,for the formation of industrial system of a macro-economic region, five requirements should be met:1 a relatively integrated sectorial structure, 2 adequately strong economic str...

工业地区大体可分为资源型、市场型和混合型三种，分别以辽中南、长江三角洲和京津唐三个工业基地为代表。

Methods: For 4 tetrameric STR loci (D5S818, D8S1179, D18S51and D21S11) genetic research, monoplex PCR methods were established to study the allele frequency and the applicability of forensic medicine.

应用聚合酶链反应，聚丙烯酰胺凝胶电泳及银染分型技术，对延边地区109名朝鲜族无关个体进行群体调查，获得四种基因座的群体遗传学资料。

It has been warranted through experiments and practical application that rare-earths-high-aluminium heat-resistant nodular iron has some intrinsic properties which are worthy of reconimandation, namely,that it will not scale after long periods of use at 1050-1100℃, will hardly break while being hammered into castings, runners or risers as the high-temperature tensile strength reaches 14-19 kg/mm2 at 800℃ or≥l3.3kg/mm2 at 900℃, with the room temperature strength close to HT 30-50 and the unnotched impact str...

本文介绍了稀土高铝耐热球墨铸铁的生产实践、化学成分；探讨了稀土作用及其用量和控制；论述了稀土和铝加入方式以及冷却速度对金相组织的影响；并对铸造工艺、铸件缺陷及分析、耐热性能及使用效果作了阐明。试验和使用证明：稀土高铝耐热球墨铸铁在1050～1100℃长时间工作不起氧化皮，热强度800℃时，14～19kg/mm~2，900℃时≥13.3kg/mm~2，室温强度近于HT30—54，a_k≈2～6kg·M/cm~2，锤击铸件或浇冒口，很难碎裂，并能机械加工。可以认为是以我国富产资源为原料，能用各种炉子熔炼、耐热和综合机械性能均较高硅、中硅中铝球铁、高铝片墨铸铁为高的一种耐热铸铁，也是镍铬系耐热材料较好的替代品。

The str in g should not conta in any ASCII control characters such as carriage returns, l in efeeds, tabs, or backspaces.

字符串不应该包含任何 ASCII 控制字符，比如回车键，换行键，制表符或退格键。

Aiming at the ballasted continues welded track and turnout structure on the normal embankment, stability analysis model of continues welded track is established by finite element method to avoid the disadvantages of traditional methods, compile the finite element analysis program and make comprehensive analysis on the lateral deformation and vibrational characteristics caused by temperature force of the continues welded track and turnout str ucture.

本文针对有砟轨道普通路基上无缝线路及无缝道岔轨道结构，运用有限元法，建立了三维无缝线路稳定性分析模型，避免了传统理论假设过多的弊端，基于有限元分析软件，编写了有限元分析程序，对无缝线路和无缝道岔的横向变形和横向振动特性进行了全面研究，主要研究内容有：1。

Supporting the main products are: heavy-duty truck chassis parts, 457 Axle STR axle and suspension Balance shaft assembly, and to develop their own series of more than nine kinds of auto parts.

配套的主要产品是：重型卡车底盘零部件、457车桥及斯太尔车桥平衡悬挂轴总成，并自主开发研制了九个系列的百余种汽车零部件。

According to differences among these groups, for est potential fire behavior in Qinling mountains crown fires can be divided into strong crown fire type, weak crown fire type and no crown fire type based on th e maximum crow density of easily burning layers, separated by indices D 0.11 kg/m3 and 0.37kg/m3 respectively; the intensity of surface fire can be d etermined by the μ and W factors and be divided into 3 classes, the str ong surface fire and the medium surface fire, separated by indices W 1.40k g/m2 and indices μ 40%respectively.

据类间 差异性将秦岭森林潜在树冠火行为分为强度树冠火、弱度树冠火和无树冠火3种类型，划分依据为冠层易燃物最大密度，区分指标分别为0.11kg/m3和0.37kg/m3；地表火强度划分应用μ和W双因素判断法，并将其划分为强度地表火、中度地表火和弱度地表火3 种类型，其区分指标分别为地表可燃物载量1.40kg/m2和地表可燃物绝对含水率40%。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷