鋸齒形頂 的英文怎麼說
中文拼音 [jūchǐxíngdǐng]
鋸齒形頂
英文
half monitor-
Characteristics : perennial pubescent herb ; leaves dimorphic, the radical with 3 - lobes, coarsely serrate at margin ; cymes terminal ; flowers yellow, to 2 cm diam., sepals 5, petals 5 or more ; fruit consisting of many aggregated achenes
形態：多年生草本，被毛；葉兩形，基生葉3裂，粗鋸齒緣；聚傘花序頂生；花黃色，直徑可達2公分，花萼5片，花瓣5片或更多；頭狀聚合瘦果球形。Leaves papery, oval in outline, 6 - 7cm long and 8 - 11 cm wide, base rounded or subtruncate, trilobed or sometimes 5 - lobed ; lobes triangular - ovate, rarely ovate - oblong, apex acute or acuminate, margin serrulate, with appressed acute teeth, sometimes entire near base, glabrous or with tufted hairs at vein axils abaxially ; petiole 2 - 3 cm long, glabrous
葉紙質，輪廓闊卵形，長6 - 7厘米，寬8 - 11厘米，基部圓或近截平， 3裂或有時5裂，裂片三角狀卵形，有時卵狀長圓形，頂端漸尖，邊緣有疏而銳利地鋸齒，有時近基部全緣，兩面無毛或下面脈腋有簇毛；葉柄長2 - 3厘米，無毛。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。The results indicate that if the value of press stress is over certain figure, press stress and al plate ’ s thickness have little influence on sawtooth distortion for the same kind of sawtooth ; sawtooth distortion is well - regulated under static press, while it is irregular under impact press. bottom coating make great influence on bond strength of samples which can improve the value remarkably ; bonding mechanism of clad steel is mechanism of mechanical effect that sawtooth which is hooked occludes with al plate
結果表明：同種齒型，當壓應力大於一定的值時，壓應力和覆板的厚度對齒形的變化影響不大；靜壓下齒形變化比較規則，鋸齒頂端向一側彎曲成鉤狀；沖壓下齒形比較凌亂，鋸齒的頂端沒有明顯的變形；后處理對試樣的結合強度影響很大，打底試樣由於粘結層的作用，結合強度較高；機械作用機制是復合鋼板的主要復合機理，鋸齒彎曲成鉤狀和鋁板形成機械咬合。The wind and rain slowly change the shapes of the mountains, creating strange forms that resemble tower, peaks, rounded hills and sawteeth.
風雨漸漸改變山脈形狀，形成奇態，彷彿是樓塔、尖頂、圓山或是鋸齒。The results indicate that the time of press influences sawtooth distortion greatly, but infects sawtooth less. root of the sawtooth made by the method of static simulating rolling have no changes hardly, and from the upper distance the changes became, then on the top the sawtooth curves to the opposite direction
結果表明：壓制時間對齒形的變形影響較大，對齒型的影響很小；模擬軋輥壓制的鋸齒，根部一段幾乎沒有變化，是從一段距離開始變形，然後在頂端向相反的方向彎曲；壓製成型后，鋁板厚度的變化很小。分享友人