裂環反應 的英文怎麼說
中文拼音 [lièhuánfǎnyīng]
裂環反應
英文
cycloreversion reaction-
A novel ring - enlargement oxidation of polyphenyl substituted cyclopentadienes in air ( or molecular oxygen ) promoted by perchloric acid was described, in which an oxygen atom was inserted into the cyclopentadiene - ring, forming a six - membered pyrylium salts
摘要報導了空氣（或氧氣）存在的條件下，由高氯酸引發多苯基取代環戊二烯發生新穎的碳碳鍵斷裂擴環反應，在此反應中，氧原子插人到環戊二烯環中形成相應的六元環吡喃鹽類化合物。When researching the relationship between man and environment, we should pay close attention to the fact behind the deterioration of local ecological environment - the break of culture relationship between man and environment. in the relevant research of the relationship between man and environment, we should stress the importance of local cultural existence and point out the consequence of negligence of local people ' s initiatives by reflection of national construction and economic development. we shall discard the ecology - oriented and man - oriented ideologies amid the rising tide of environmental protection, focusing on the adaptability of local people to local ecological environment, so as to blaze a new trail to sustainable and harmonious development among ecology, economy and culture based on local people ' s initiatives
在人與環境關系的研究中，應關注當地生態環境惡化的表象背後，存在著人與環境之間文化關系的斷裂；希望在相關人與環境之間關系的研究中，注重反思國家建構和經濟發展過程中，本土民族文化生存的重要性與主體性地位被忽略的後果;並以此為鑒，在當前呈蓬勃之勢的環境保護浪潮中，摒棄生態中心主義與人類中心主義，關注本土民族與當地生態環境之間存在的文化適應性，從而以當地民族主體性為出發點，探討生態、經濟與文化協調的可持續發展之路。The bisonc burnup library is replaced to facilitate the computation of the burnup process with complicated burnup chains. we have made and evaluated the new library ( hendl ) which contains 139 kinds of nuclides with 175 groups for neutron and 42 groups for gamma, 15 kinds of neutron reactions and p0 - p5 expansion. the revised code which we call bus - id is more adaptable to the computation of hybrid reactor for its fuel breeding and the transmutation of the hlw
並且在一維輸運及燃耗計算程序bisonc的基礎上，提出用新的數據庫（ hendl ）代替原有的bisonc數據庫， hendl庫考慮了更加全面的燃耗過程和多種燃料循環方式，通過修正讀入的核截面數據庫中的參數，考慮共振自屏效應，製作並且評估了新的含有139種核素、多種反應截面、 175群中子42群光子、 p _ 0 - p _ 5展開的中子反應數據庫，開發出新的程序bus - 1d ，使得更能適應聚變?裂變混合堆的燃料增殖、高放長壽命核廢料（ hlw ）的嬗變等計算的要求。Nuclear criticality safety for fissile materials outside reactor - borosilicate glass raschig rings and its application criteria
反應堆外易裂變材料的核臨界安全硼硅酸鹽玻璃拉希環及其應用準則Correspondingly, xrd patterns revealed that carbon shells became graphitic somehow. the effects of organic solvents and catalysts / catalysts precursors on the structure and morphology of products were also investigated in this study. cyclohexane, instead of benzene, was proven to be a suitable solvent, as it would not pyrolyze in the reaction system
對金屬催化劑（或前體）以及有機溶劑與產物形貌關系的研究結果表明，苯作溶劑在反應條件下易裂解並形成積炭，從而阻礙了多孔碳產物的繼續生成，而選用環己烷可以避免類似的裂解反應。From a viewpoint of organic synthesis chemistry, the recent development and applications of molecular iodine as a catalyst in organic reactions including the formation and cleavage of common protecting groups, oxidation, reduction, cyclization, addition, substitution and rearrangement are reviewed
從有機合成化學的角度，按反應類型綜述了分子碘作為催化劑在有機化學中的應用，碘催化的反應主要涉及保護基團的形成和裂解、氧化和還原反應、成環反應、加成反應、取代反應和重排反應等。After 20 days at 450 or 1 day at 500, the u3si2 particles cracked and fragmented, there were a lot of cracks in al - matrix and reacted areas, there were also a lot of holes in the meat. the meat lost its continuity and perfection, and departed from clad. above 450 the volume fraction of the al - matrix and the u3si2 decreased and produced u ( al, si ) 3 in the meat, u3si2 particles invaded to clad
在450熱循環20天後、 500熱循環1天後，燃料板的厚度變化一般0 . 04mm ，燃料板的翹曲現象嚴重； u _ 3si _ 2顆粒開裂及破碎，基體中產生大量的裂縫，反應層也存在大量的裂紋及孔洞，芯體已失去連續性、完整性，並且與包殼脫開。The department ' s programs are at the forefront of nuclear science and technology leading to improved performance of fission - powered reactors, the technological applications of nuclear and radiation phenomena in biomedical, industrial, and environmental fields, and the development of nuclear fusion as an energy source
本系的課程走在核子科學和科技的最尖端，目的在提高核裂變反應爐的效能、核子和輻射在生物醫學、工業和環境領域的應用，以及研發核融合成為穩定的能源。Based on understanding of many practices of asphalt overlay on old cement concrete pavement in our country and rehabilitation of boai road in zhongshan city, this paper analyzes and studies the rehabilitation technology of old cement concrete pavement systematically, includes : ( 1 ) the assessment for structure characteristic of old cement concrete pavement a correct assessment for pavement distress and structure characteristic of old cement concrete pavement before overlay is the stick point of preventing reflection cracking and guarantee the success of rehabilitation, which requires understanding how the structure characteristic of old pavement effects the stress and reflection cracking of the asphalt overlay
本文在調查了解國內許多舊路改造實踐工程的前提下，基於中山市博愛一路的改造實踐，對舊水泥混凝土路面瀝青罩面改造進行了系統的分析研究。主要的研究內容包括： （ 1 ）原有路面結構性能的評估在瀝青混凝土加鋪罩面之前對舊水泥混凝土路面的損壞情況和結構狀況進行正確的評價是解決反射裂縫和保證加罩成功至關重要的一環，其前提就是要了解舊水泥混凝土路面的結構特性對瀝青罩面層中的應力和反射裂縫的影響。With compared to other species of schizothoracinae fishes, the diploid chromosome number of qinghai - lake nakked carp was equal to schizothorax waltoni, s. o ' connori, oxygymnocypris stewarti, schizoygopsis pylzovi and chuanchia labioza. this showed that these schizothoracinae fishes which diploid chromosome number were 92 were likely to have experienced similar ecological environment as they involved into special qinghai - tibten plateau - adaptive species gradually
由此反映出具有92條染色體的裂腹魚在逐漸演化成適應于高原生態環境的特殊類群時，可能經受過相同或相近的生態處境；與大多數裂腹魚一樣，青海湖裸鯉也可能是二倍化了的多倍體；青海湖裸鯉可能是某些原始的?類通過演化和自然選擇，逐漸演化成適應于高原生態環境的特殊類群。Thermal and welding residual stress often produces in the proceeding of the electronic package, the residual stress release and thermal deformations of the microelectronics will reduce the assemble intensity between the chip and package, and then debase the electrical performance of the assemble circuit, numerous thermal cycling will lead to thermal fatigue or thermal failure of the microelectronics
電子封裝器件在生產的工藝過程中，往往會產生熱殘余應力以及焊接殘余應力，殘余應力的釋放作用及器件在使用過程中的熱變形，會降低集成電路晶元與封裝體的結合強度，進而降低集成電路的電性能，反復的熱循環，將導致器件的熱疲勞失效，嚴重時可導致矽片或陶瓷片破裂，使整個器件遭到破壞。The results showed that its yield was inversely proportional to the concentration of - amylase and reaction time when the maize starch was hydrolyzed by - amylase ; the granular maize starch was converted into hollow - porous starch by ct - amylase, furthermore it was cracked to the fragments, it was discovered that there were laminated growth ring structure inside starch granular shown on such cracked granular fragments ; the crystallinity of maize starch granule can not he increased by the enzyme hydrolysis ; the thermodynamic stability of the product was reduced when the hydrolysis time was long
檢測結果表明， -澱粉酶催化水解玉米澱粉時，其收率與酶的濃度和反應時間成反比；顆粒狀玉米澱粉發生酶催化水解時， -澱粉酶首先使澱粉形成多孔狀結構，並進一步使顆粒破裂，斷裂的顆粒碎片上顯示出澱粉顆粒內部具有層狀的生長環結構；酶催化水解不能提高玉米澱粉顆粒的結晶度；酶解時間較長時，產品的熱穩定性降低。However, the pavement is easily spoiled by reflective cracking from semi - rigidity base because semi - rigidity base is sensitivity to low temperature and little humidity, so through adverse circumstance and reduplicate vehicle load. the base can have easily rupture by much dryness and low temperature. then these interior fractures will extend to exterior asphalt
這是因為半剛性基層材料對溫度和濕度反應敏感。在環境和重復交通荷載作用下，基層容易產生干縮和低溫縮裂裂，半剛性基層這些裂縫會擴展到面層，形成反射裂縫。Then, as more water returned to the reaction zone, neutrons became properly moderated and fission once again resumed, allowing the cycle of heating and cooling to repeat
然後，隨著更多的水回到反應區，中子受到適當的緩沖，核分裂再度展開，使得上述加熱和冷卻的循環重復。分享友人