孔沟 meaning in English
caverne
pit canal
pore canal
vacuity
Examples
- Molding manner : widely grinded such as molding , plane , cylinder , internal hole , furrow grinding and etc
加工方式：加工研磨广泛，如成型平面圆筒内孔沟研等。 - Most of the germinal apertures were 3 couples , distributed symmetrically at the three sides by the axis of symmetry of the tetrahedron
萌发孔沟的长度、宽度、孔盖长宽与形状、突起的程度等，在个体间有差异。 - The evolutionary trend of the germination apertures of the pollen grains in this tribe may be from the absence of germination apertures to the presence of 3 , 4 - colpate , then to 3 - colporate germination aperture
无萌发孔的山莫若属是原始类群，三孔沟的马尿泡和天仙子等属是进化类群。 - At the surface of the pollen grains there are three types of aperturates , including three porates type , three colpates type and three porate - colpates type ; and four types of sculpture , namely , reticulate , striate , striate - reticulate and verrucate . the upper epidermal cells of the leaves of 12 species plants are detected with hpias - 1000 image analytic system through the treatment of binarization , and the experimental methods are proved stable . the results indicated that the waviness of the anticlinal walls ( sfc ) and the ratio of the feret ' s diameter ( slf ) of the epidermal cells of the middle lamina in the third node of leaves starting from the lowerest part of the stem have a relative constant range and could distinguish from each other . oieanolic acid , l , 5 , 8 - trihydroxy - 3 - methoxyxanthone and swertiamarin are separately detected on the tlc , and the different chromatogram of various plants can be considered as characters of identification . the contents of oleanolic acid in 12 species of plants are determinated by hplc , but among the different plants and botanical organs their contents are different , and the highest content in flowers
本文对川鄂产獐牙菜属药用植物资源进行了野外调查、标本采集和鉴定，对12种干燥药材的性状进行了描述，提供了可以鉴别的特征。通过扫描电子显微镜观察的12种本属药用植物的花粉粒均为单粒花粉，萌发孔有3孔型， 3沟型和3孔沟型三种类型；表面纹饰包括网状纹，条状?网状纹，条状纹和瘤状纹四种类型。用hpias ? 1000高清晰度彩色病理图文分析系统对叶片上表皮细胞作图像分析，并进行方法学研究，结果表明，同种植物茎上第3节叶片中段主脉和第1侧脉之间叶上表皮细胞垂周壁弯曲程度sfc值和细胞纵、横向直径的比值slf值，种间有显著差异，每种都有相对恒定范围值。 - The colpal membrane is nearly smooth but with granular , spinulose or tuberculate protuberances . the pollen grains show great variations between the genera in the tribe hyoscyameae in terms of the presence or absence of the germination aperture and its type , and the exine ornamentation , and thus can be used as important characters in the consideration of the phylogenetic relationship of this tribe
各属植物的花粉形态在萌发孔的有无、萌发孔的类型和外壁纹饰等方面有较大的差异，可以作为探讨属间分类和系统关系的重要依据c天仙子族植物花粉萌发孔的演化趋势为：无萌发孔一3 、 4沟一3孔沟。