As we all known, with the founding of euclidean geometry in ancient greece, with the development of analytic geometry and other kinds of geometries, with f. kline " s erlanger program in 1872 and the new developments of geometry in 20th century such as topology and so on, man has developed their understand of geometry. on the other hand, euclid formed geometry as a deductive system by using axiomatic theory for the first time. the content and method of geometry have dramatically changed, but the geometry curriculum has not changed correspondingly until the first strike from kline and perry " s appealing
縱觀幾何學發展的歷史,可以稱得上波瀾壯闊:一方面,從古希臘時代的歐氏綜合幾何,到近代解析幾何等多種幾何的發展,以及用變換的方法處理幾何的埃爾朗根
綱領,到20世紀拓撲學、高維空間理論等幾何學的新發展,這一切都在不斷豐富
人們對幾何學的認識;另一方面,從歐幾里得第一次使用公理化方法把幾何學組織成一個邏輯演繹體系,到羅巴切夫斯基非歐幾何的發現,以及希爾伯特形式公理體系的建立,極大地發展了公理化思想方法,不管是幾何學的內容還是方法都發生了質的飛躍。
Compared with the former study of interaction between varieties of vertebrates hemoglobin and human hemoglobin, human fetal hemoglobin ( hb f ), the results support the conclusion about the boundary of interaction between vertebrates hemoglobin and kinds of protein molecule in the electric field is the reptilia animals and enrich the theory of hemoglobin molecular evolution
同前面所進行的各種脊椎動物血紅蛋白分別與
人血紅蛋白、胎兒血紅蛋白相互作用的研究對照比較,進一步驗證脊椎動物血紅蛋白與各種蛋白分子在電場中的相互作用的分水嶺可能位於爬行
綱動物,豐富了血紅蛋白分子進化理論。
But herodotus is too alluring a companion for one who would write an outline of history.
但是對于要編寫一部史
綱的
人來說,希羅多德是個過于引
人入勝的同行。
The western scholars ? las and johnson has shown that the hard core of the research programs based on the science research programs methodology is difficult to change and it can be maintained and developed by adjusting the assisting hypothetic protecting zone. they give comparatively objective statement of the hard cores of western mainstream economics research programs and the marx ' s economics research programs, which is based on the comparative analysis on the human being, rationality, property right, market and the view on the social history of the two hard cores
西方學者格拉斯和約翰遜根據拉卡托斯的科學研究
綱領方法論所表明的研究
綱領的硬核不易改變,可以通過調整輔助性假設保護帶的方法來加以維護和發展的學說,對西方主流派的經濟學研究
綱領的硬核和馬克思經濟學研究
綱領的硬核的內容作了比較客觀的陳述,他們的陳述是以對兩大
綱領硬核關於
人、理性、產權、市場和社會史觀的對比分析來進行的。
Liminal, deficient, inhuman, half - human, and superhuman ? this list describes the range of ghosts, immortals, swordswomen, and other radiant beauties who suddenly and magically appear to an unexpecting man in pu songling ' s stories
演講大
綱:在感官的臨界點上、有所欠缺、非
人、半
人與超
人以上描述的是蒲松齡的故事里,鬼、仙、俠女以及其他勾魂攝魄的美女,突然出其不意在一個男子面前出現。
Although some arthropods such as wasps, wild bees, ants, millipedes, motes, etc. are harmful or cause nuisance to human beings, they are not killed unless they pose a threat
雖然黃蜂、野蜂、螞蟻、倍足
綱節肢動物、 ?等節肢動物會傷害或滋擾
人類,但除非它們構成威脅,否則不會被殺滅。
Studies on spermatogenesis and oogenesis in palaemon modestus jiang ye - qin ( chemistry department, huzhou teachers coliege, huzhou 313000 ) palaemon modestus belongs to genus palaemon, family palaemonidae, caridea, natantia, decapoda, class crustacean. lt is a kind of freshwater prawn across china and especially abounds in the taihu lake which is regarded as one of the " three delicacies " of the taiha lake. as for the researches on palaemon modestus, v / e can only refer to spermatogenesis of freshwater shrimp exopalaemon modestus ^ ruang hai - xia et al, 2001 ), studies on reproductive biology of exopalaemon modestus l. the structure and development of the male reproductive system ( huang hai - xia et al, 1999 ) and studies on freshwater prawn in the taihu lake ( yan sheng - liang, 1999 ). on the bases of their researches and with the help of tem, i have made further researches on sperm ultrastructure, spermatogenesis, oogenesis and mature oocyte ultrastructure in palaemon modestus
秀麗白蝦palaemonmodestus屬甲殼
綱crustacea十足目decapoda游泳亞目natantia真蝦部caridae長臂蝦科palaemonidae長臂蝦屬palaemon ,是我國南北均產的淡水蝦,其中太湖產量尤其大,與太湖銀魚、鱭魚並稱「太湖三寶」 。有關秀麗白蝦的研究僅見秀麗白蝦雄性生殖系統的研究(黃海霞等, 1999 ) 、秀麗白蝦精子發生的研究(黃海霞等, 2001 ) 。本
人在前
人工作的基礎上,利用透射電鏡技術( tem )進一步研究了秀麗白蝦精子的形態、結構及精子的發生過程,同時還研究了秀麗白蝦卵的發育過程,從卵原細胞到卵黃發生前的卵母細胞、卵黃發生的卵母細胞及成熟卵細胞,各期卵細胞的形態結構特點及各部分結構的變化情況。
Abstract : according to the chinese soil taxonomic classification ( revised proposal, 1995 ) and our data and information for classification of linze zone in the hexi corridor, the authors propose a taxonomic classification of soils of linze zone in the hexi corridor, in which all the soils are divided into 4 soil orders ( anthrosols, aridisols, gleysols and cambisols ), 4 soil suborders, 5 soil groups and 8 soil subgroups
文摘:根據《中國土壤系統分類(修訂方案) 》 ( 1995 ) ,對河西走廊臨澤樣區土壤進行了系統分類研究,提出了臨澤樣區土壤系統分類方案:將土壤分為4個土
綱(
人為土、乾旱土、潛育土和雛形土) , 4個亞
綱, 5個土類和8個亞類。
Number of personnel and equipment were adequate, as outlined in the airport emergency plan
根據機場應急計劃的大
綱,
人員與設備的數目是充足的。
2, zhanggang renmin road, jiangdu xiannv town, 225212, p. r. china
張綱人民路2號江都市