茎

Comparative anatomy of Chinese Dioscorea and its meaning in sectional divisions.

薯蓣属茎的比较解剖及其在分组上的意义。

Diosgenin is steroid compound that is extracted from the tuber of Dioscorea L.

薯蓣皂素是从薯蓣属植物根状茎中分离出来的一种甾体化合物。

Stems branched from base, glabrous; branches divaricate; leaves lanceolate or oblong, base cuneate or narrowly cuneate.

茎分枝自基部，无毛；分枝极叉开；叶披针形的或长圆形，基部楔形或者狭楔形。

Techniques of issue culture in Dracaena fragrans were researched, taken tender stem section as materials, which will be used for industrialized seedling culture.

以也门铁嫩茎段为材料，开展了旨在用于工厂化育苗的组织培养技术研究。

In chapter 2, the contents of loureirins in the roots, stems and leaves of Dracaena cochinchinenis were analyzed by HPLC. On the other hand, using the preparation chromatography technology, five compounds were isolated from the leaves of Dracaena cochinchinenis, their structures were identified by means of spectral and chemical methods. They are steroidal saponins.

第二章主要是利用HPLC技术对剑叶龙血树根、茎、叶中龙血素成分的分析与探讨，并利用制备色谱等技术对剑叶龙血树叶子组成成分进行了分析、研究，得到化合物5个，经波谱鉴定，这5个化合物均是幽体皂贰类化合物。

Taking the stem from three varieties of Dracaena fragrans as a material, the effect of the factors such as the plant growth regulators, the different basal culture medium, silver nitrate, and the cultivation medium upon tissue culture regeneration were investigated.

以3个也门铁品种（金心也门铁、金边也门铁和普通也门铁）茎段为材料，研究了植物生长调节物质、基本培养种类、AgNO3、栽培基质等因素对其离体再生的影响。

The edible parts of the vegetables(stems of water dropwort and corms of arrowhead and water chestnut)showed enrichment of 147 Pm with the absorption coefficient,being 1.29±0.28,2.09±0.03 and 1.55±0.55,respectively.

其中，水芹菜随生长时间的延长，吸收147Pm的量明显增加，50、80、110d时全样的吸收系数分别为0.98±0.19、0.92±0.38和1.14±0.18；(2)3种蔬菜的食用器官(水芹菜的主茎，慈姑和荸荠的球茎)对147Pm具有明显的富集性，吸收系数分别为1.29±0.28、2.09±0.03和1.55±0.55。

Stem loops and short dyad sequences appear in the downstream of the translation stop codon.

序列结构分析发现在编码区的下游有可形成茎环的反向重复序列和形成发夹结构的回文序列。

The early settler s wrote that the prairie grass was very beautiful, interlaced with flowers in the spring, and so tall that a man on foot could not see over it

据早年的殖民者记载，当时大草原的绿草极美，春天百花交织，草茎很高，使人置身其内时望不见外面。

Cellusoft that tongue to lick my penis itch a Ma, I get, there is a sense of an immortal eclosion, came flying from stem Department pleasure.

那纤柔的舌头把的我的龟头舔得麻痒痒的，使我飘飘然，有一种羽化登仙的感觉，从茎处传来阵阵快感。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。