有环的

The segment arrangement on circular curves has proven theoretical support; the segment arrangement on transition curves, however, has no theoretical support and is usually executed by means of VMT systems equipped on shield machines. On basis of the relevant survey theories and the actual conditions of the turning rings, the author probes into the segment arrangement on transition curves in the paper.

对于圆曲线的管片排版已有了相对较为成熟的理论，而缓和曲线上的管片排版以往通常是根据盾构机VMT来选择，没有成型的理论支持，为此，结合测量理论和弯环管片的实际，探索出在缓和曲线上准确选择弯环管片理论排版的方法。

Let n ≥ 4 be a fixed integer, R be a unital commutative ring of characteristic not 2, and D_n be a D_n-type classical Lie algebra over R.

假设n是一个大于等于4的整数，R是特征非2的有单位元的交换环，D_n是环R上的D_n型李代数，N是D_n的一个极大幂零子代数。

The utility model characterized in that the syringe's (2) inner wall, the parts at the back end of the syringe's (2) jaw opening, is a subuliform ring blocked, and the handspike's (4) outer wall, the parts close to the back end of the handspike(4), is heaved to the inside with more than two pieces of wing panels matching to the subuliform block ring.

本实用新型提供了一种一次性注射器，由针头（1）、针筒（2）、活塞（3）、推杆（4）组成，针筒（2）前端的乳头上套装连接着针头（1），推杆（4）前端连有活塞（3），其特征在于针筒（2）后端开口处的内壁上设有锥形挡环（5），在靠近推杆（4）后端处的推杆（4）外壁上设有与锥形挡环（5）相配合的向针筒（2）内壁凸起伸出的两支以上的翼片（6）。

Using properties of idempotents,we show several necessary and sufficient conditions for the invertibility of the difference of two idempotents, and exhibit some applications to matrix ring s.

本文研究在一个有单位元的环中两个幂等元之差的可逆性问题，利用幂等元的性质，得到了两个幂等元之差可逆的几个充分必要条件，并给出了在矩阵环中的几个应用。

There are 6kinks of loop bedding, such as smooth polliwog shape, horsetail or pinch-and-swell loop, associated with syn-sedimentary microfracture, catenarian loop bedding group, spindle loop bedding group and loop bedding with a slungshot as core in the studied area.

研究结果表明，济阳坳陷古近纪软沉积物变形层中的环状层理类型多样，形态复杂，计有光滑圆环状及蝌蚪状带"小尾巴"的环状层理、马尾丝或串珠状不规则环圈的环状层理、与阶梯状微断裂伴生的环状层理、链条状环状层理群、纺锤型环状层理群和中心为"飞石"环圈较光滑的环状层理等6种。

Because wreath tablet the hair feather of the yarn appearance with spin cotton serial number, yarn Nian degree, thin spindles soon, the involution take shape all of etc.s to spin cotton craft parameter to have direct influence, in the meantime because of wreath tablet the hair feather of the yarn appearance have no rule, at yarn surface of distribute and present random, even each segment of yarn length of same yarn size reflection of the hair feather be average value, the hair feather of various length value usually difference also big.

由于环锭纱线的毛羽状态与纺纱号数、纱线捻度、细纱锭速、卷绕成形大小等纺纱工艺参数有直接影响，同时由于环锭纱线的毛羽形态无规则性，在纱线表面的分布呈随机性，即使同一纱线大小纱各段长度反映的毛羽平均值，各种长度的毛羽值往往差异也大。

Only 3 haplotypes existed within chinese goat populations by analyzing 96 sequences in the study, combined 16 domestic goats and 2 wild goats (Capra aegagrus and Capra falconeri) reported in documents. The average number of nucleotide differences, average number of nucleotide subs.

将本研究测定的96条mtDNA的D环全序列与文献报道的16条家山羊序列、2种野山羊的D环序列结合分析发现，文献报道的单倍型仅有3种在中国山羊中存在。

There are 6kinks of loop bedding, such as smooth polliwog shape, horsetail or pinch-and-swell loop, associated with syn-sedimentary microfracture, catenarian loop bedding group, spindle loop bedding group and loop bedding with a slungshot as core in the studied area.

研究结果表明，济阳坳陷古近纪软沉积物变形层中的环状层理类型多样，形态复杂，计有光滑圆环状及蝌蚪状带&小尾巴&的环状层理、马尾丝或串珠状不规则环圈的环状层理、与阶梯状微断裂伴生的环状层理、链条状环状层理群、纺锤型环状层理群和中心为&飞石&环圈较光滑的环状层理等6种。

Displayed similar photophysical changes in the presence of DNA. But the complex increased the viscosity of DNA weakly. This suggests that due to the constraint from the rigid structure of the macrocyclic ligand, the complex binds to DNA by weak intercalative interaction.

在光谱方面也出现了类似的现象，但DNA的粘度却略有增加，说明环上的苯环可能由于受到整个配合物结构刚性的限制，只能以较弱的插入方式与DNA作用。

The sequence of the power of three cyclodextrins to enhance the desorption of NBP was similar to that of their power to solubilize it, so the extent of desorption enhancement for cyclodextrins might relate to that of the suitability of their cavity to the molecule of NBP.

三种环糊精促进2-硝基联苯解吸的能力大小顺序与它们对2-硝基联苯的增溶能力的大小顺序是一致的，说明环糊精促进解吸的程度可能与其空腔匹配2-硝基联苯的程度有密切关系。

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