查询词典 base 2

We studied reactions of sulphoxide with aliphatic and aromatic 1,3-dicarbonyl compounds promoted by Cu2·H2O, 2,2′-biimidazole and iodobenzene diacetate, with the presence of K2CO3 as a base and DMSO a solvent.

我们以K2CO3作为碱，DMSO作为反应的溶剂，在二醋酸碘苯、Cu2·H2O、2，2′-联咪唑体系中，对脂肪族和芳香族的1，3-二羰基化合物和亚砜的反应进行了研究。

Male flowers: around apical pore, nearly always subtended by 2 bracteoles,± sessile; stamens (1 or)2, filaments joined at base; anthers mucronate; pistillode usually absent.

雄花： 在顶端的孔周围，近总是被2小苞片包着，多少无梗；雄蕊(1或者)2，花丝在基部连接；花药短尖；退化雌蕊通常无。

Flowering shoots mostly clustered, with solitary l flowers at top, sessile and enclosed basally by clustered upper leaves; calyx tube tinged purple, obconical, 10-12mm long, lobes of the same shape as upper leaves; corolla long-bell-shaped, 5-6cm long, 2.5cm across, lobes ovate, plaits regular or slightly oblique, praemorse at rim ; stamens borne in lower part of corolla tube, regular ,filaments blue, awl-shaped ,united at base and surrounding ovary , anthers yellow, narrow—oblong, ovary narrow-ellipsoid, style linear, stigma 2-fid, lobes linear ,recurved.

花枝多丛生，花单生枝顶，基部包围在上部叶丛中，无花梗；花萼筒带紫色，倒锥形，长10~12mm ，裂片与上部叶同形；花冠长钟形，长5~6cm ，径约2.5cm ，裂片卵圆形，褶整齐或微偏斜，边缘啮蚀状；雄蕊着生于冠筒下部，整齐，花丝蓝色，钻形，基部联合包围子房，花药黄色，狭矩圆形，花柱线形，柱头2裂，裂片反卷，线形。

Xie Ge is qualitative, elliptic or written complaint pouring egg is chief circle, long 4-8(-12) centimeter, wide 1.8-4.5 centimeter, xian Dun knife base level of ministry wedge margin is provided toothed, two sides is not had slippery without wool; Petiole grows 3-7 millimeter, beautiful sheet is born or 2-4 composition gives birth to cyme white, diametical 2.5-3.5 centimeter, have sweet smell, millimeter of peduncular long 6-10, issue a turn; Sepal 5(6), circle, the constellation when fruit is put; Petaline 7-8(-9), broad look pouring egg or circle; Stamen is most, outside annulus filament is accrete into short canal; Ovarian 3 rooms, outside by wool, style is topmost 3 crack.

叶革质，椭圆形或倒卵状长圆形，长4-8(-12)厘米，宽1.8-4.5厘米，先钝刀基部楔边级具锯齿，两面无滑无毛；叶柄长3-7毫米，花单生或2-4组成生聚伞花序白色，直径2.5-3.5厘米，有香气，花梗长6-10毫米，下弯；萼片5(6)，圆形，果时宿存；花瓣7-8(-9)，宽倒卵形或圆形；雄蕊多数，外轮花丝合生成短管；子房3室，外面被毛，花柱顶端3裂。

Stamens 5–10, hypogynous or perigynous, in 2 whorls alternately longer and shorter, those opposite petals often shorter and abortive; filaments free or shortly connate at base; anthers didymous, dorsifixed in proximal 1/2, introrse, short, dehiscing longitudinally.

雄蕊5-10，下位或周位，2轮，一轮较长，一轮较短，与花瓣对生的通常短并且败育；短的花丝离生或在基部合生；花药成双，在近端1/2背着，向内，短，纵向开裂。

Lateral crus presented diamond-shaped or long strip,(16.21 ± 2.71) mm in length,(8.45 ± 1.72) mm in width,(1.09 ± 0.18) mm in thickness. Cephalic rim intersected lower edge of lateral nasal cartilage, and slightly covered the lower edge of the lateral nasal cartilage, so that the two were overlapped, but also only the intersection without overlapping. Lateral crus constituted the base of nasal wings. Narrow medial crus formed nasal tip and the frame of front nasal columella, showing posteroinferior curve or S shape,(13.06 ± 2.16) mm in length,(3.79 ± 0.58) mm in width,(1.02 ± 0.18) mm in thickness. The left and right medial crus in the middle were connected by connective tissue, and in the same way connected to the anterior margin of the lateral nasal cartilage.

外侧脚呈菱形或长条形，长(16.21±2.71) mm，宽(8.45±1.72 ) mm，厚(1.09±0.18) mm，头缘与侧鼻软骨下缘相交，并略覆盖侧鼻软骨下缘使二者部分重叠，也可仅相交而无重叠；外侧脚构成鼻翼大部的基础；内侧脚狭细，构成鼻尖和鼻小柱前部的支架，呈向后下的弧形弯曲或S形弯曲，长(13.06±2.16) mm，宽(3.79±0.58) mm，厚(1.02±0.18) mm；左、右内侧脚在正中线借结缔组织相连，并以相同方式连于侧鼻软骨的前下缘。

The results indicate that [(L 1) 2SnEt 2] can selectively bind to the N 1 atom of the base and the phosphate oxygen atom of AMP and may further destroy the helical structure of DNA, while the dimethyltin compound of 1,3 dimethyl 4 acetyl 5 pyrazolone [(L 1) 2SnMe 2] merely binds to the the phosphate oxygen atom of AMP and causes the contraction of DNA helical structure.

结论3 二甲基 4 乙酰基 5 吡唑酮的二乙基锡配合物(L1 ) 2 SnEt2 可与AMP 的碱基N1 和磷酸根氧原子螯合并可能会破坏DNA 的双股螺旋结构；而二甲基锡配合物(L1 ) 2 SnMe2 易与单核苷酸的磷酸氧结合，难以与单核苷酸的碱基氮原子稳定结合且只引起DNA 双股螺旋的收缩

Plants with 2(or 3) nodes above 1 cm at the base; leaf blade firm or soft and withering in age; uppermost blade usually very narrow and folded, short, usually less than 1/2 as long as sheath to subequal; panicle open to densely spiciform

在基地的植株具超过1厘米2(或3)节；叶片坚定的或柔软和年龄蔑视；通常最上部的叶片很狭窄和折叠，短，通常不到1/2倍于鞘对；圆锥花序面向浓密穗状花序状 19

Capsule shortly stipitate, ovoid, 2-3 × ca. 2 cm, densely yellow pubescent, base tapering, apex apiculate; pericarp thin, smooth when dried.

蒴果具短柄，卵球形， 2-3 *约2厘米，密被黄色短柔毛，基部渐减，先端具细尖；果皮薄，干燥时平滑。

Leaves alternate; stipules lanceolate, 4-8 mm; petiole 2-11(-13) cm, pubescent or glabrous; leaf blade ovate, elliptic, oblong or subelliptic,(5-)9-21 × 2.5-10 cm, papery, slightly rough, secondary veins 3 or 4 pairs along midvein, abaxial surface strigillose or pubescent on veins, rarely glabrous, adaxial surface sparsely appressed strigillose or glabrous, base broadly cuneate, rounded, or obtuse, margin denticulate, apex acuminate or caudate-acuminate. Glomerules usually unisexual, sometimes bisexual, in the axils of current and fallen leaves along normal leafy stems, 4-10 mm in diam.; male ones on proximal part of flower-bearing branches; female ones on distal part.

叶互生 托叶披针形，4-8毫米；叶柄2-11(-13)厘米，被短柔毛或无毛；叶片卵形，椭圆形，长方形或，( 5-)9-21 * 2.5-10 厘米，纸质，粗糙的稍，次脉3或4 对沿中脉，背面具短糙伏毛的或短柔毛在脉上，很少无毛，正面疏生贴伏具短糙伏毛的或无毛，通常单性的团伞花序，有时两性，在正常生叶的茎的叶和脱落叶的腋内，直径4-10毫米；在忍受花的分枝的下部上的雄性的；在上部上的雌性的。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐