端生齒 的英文怎麼說
中文拼音 [duānshēngchǐ]
端生齒
英文
acrodont-
Flower - heads narrowly campanulate, 16 - 19 mm long, ca. 6 mm across, usually 2 - 4 in terminal clusters ; peduncle 2 - 8 mm ; involucral bracts ca. in 7 series, ribbed on abaxial surface, apex spiny
葉互生，卵形，長3 - 5 . 5厘米，寬2 - 4厘米，先端短尖，基部近截形，邊緣具疏齒，兩面被長柔毛，具基出脈3條；葉柄長3 - 5毫米。Leaves tufted ; stipes 15 - 30 cm long, densely scaly at base, glabrous above ; sterile lamina about 60 cm long and 20 cm wide, simply pinnate ; pinnae numerous, alternate or subopposite, linear - lanceolate, the largest about 12 cm long and 1 cm wide, base cordate, apex acuminate, margin finely toothed ; veins close, forking once or twice and forming areoles near the midrib ; fertile lamina similar to sterile ones, but somewhat reduced, about 8 cm long and 0. 4 cm wide, lower surface almost entirely covered with sporangia
葉簇生；葉柄長15 - 30厘米，基部密被鱗片，向上近光滑；不育葉片長約60厘米，寬20厘米，一回羽狀；羽片多數，互生或近對生，線狀披針形，最長者長達12厘米，寬約1厘米，頂端長漸尖，基部心形，邊緣有細密鋸齒；葉脈1 - 2次分叉，近中脈形成網眼；能育葉與不育葉相似，但較小，長約8厘米，寬約0 . 4厘米，下部滿布孢子囊。Leaves opposite, papery, ovate, suborbicular or elliptic, 4 - 8 cm long, apex rounded, base rounded to broadly cuneate, margin with regular and slightly sinuate teeth except base, covered with yellowish brown tufted appressed hairs ; petioles 0. 6 - 1. 5 cm long
葉對生，紙質，圓卵形、近圓形或橢圓形，長4 - 8厘米，頂端圓形，基部圓形至寬楔形，邊緣除基部外具整齊而稍帶波狀的鋸齒，兩面被黃褐色簇狀短伏毛；葉柄長6 - 15毫米。Leaves basal ; petiole up to 3 cm ; leaf blade elliptic, 2 - 3 cm long and 1. 1 - 1. 9 cm wide, apex rounded, base cuneate, margin serrulate, white pilose on both surfaces
葉全部基生；葉片橢圓形，長2 - 3厘米，寬1 . 1 - 1 . 9厘米，先端圓形，基部楔形，邊緣具細齒，兩面被白色柔毛；葉柄長可達3厘米。Leaves crowded near apex of the trunk, spirally arranged ; stipes dark brown, with sharp spines ; lamina large, oblong, tripinnate ; pinnae 17 - 20 pairs, alternate, longest one to 60 cm long, the basal one reduced ; rachis short - spiny ; pinnules 18 - 20 pairs, sessile or nearly so, lanceolate, to 10 cm long and 2. 5 cm wide, divided almost to the costa ; segments more or less falcate, toothed
葉螺旋狀排列，聚生於莖端；葉柄棕色，具銳刺；葉片大，長矩圓形，三回羽狀深裂；羽片17 - 20對，互生，最大的長達60厘米，基部一對縮短，羽軸有短刺；小羽片18 - 20對，無柄或近於無柄，披針形，長達10厘米，寬2 . 5厘米，深裂幾達中脈；末回裂片多少鐮狀，有齒。( 3 ) in the condition of invariable instantaneous speed ratio, the equations of teeth surface of all key components, such as end face gear, oscillating teeth, wave producer, et al, are deduced
（ 3 ）在保證瞬時傳動比恆定的條件下，由空間嚙合原理出發，重點推導了活齒端面諧波齒輪傳動裝置的主要傳動部件? ?端面齒輪、活齒以及波發生器端面凸輪的齒面方程。( 4 ) the modification theory is deduced in the condition of preserving the motion state of the end face harmonic gear drive of oscillating teeth
（ 4 ）在分析活齒端面諧波齒輪傳動裝置運動狀態的基礎上，提出了端面齒輪、活齒和波發生器端面凸輪齒面的修形方法。The gear tooths broken was found in heave - duty output gear axle after working for two years
摘要大型輸出齒輪軸運行近2年即在側端產生齒面脫斷。分享友人