超低溫液體 的英文怎麼說
中文拼音 [chāodīwēnyètǐ]
超低溫液體
英文
ultra-low temperature fluid-
Different from mammals, the early embryos of fish can not be preserved for the long period at the very low temperature ( - 196 ). therefore, three methods were usually applied to cryogenic preservation of the fine and rare species of fish : 1 ) perserving fish spermatozoon in cryogenic condition. researchers have had systematically studied on this technique for many years, and this technique has been utilized in application and made a lot of effects ; 2 ) combining with the techniques of cell engineering ( nuclear transplantation and electric fusion etc. ), and through the process of culturing histiocyte of fish, cryopreservation and re - culture after thawing, carrying out somatic cell breeding of fish. the past studies showed that the nucleolus of somatic cells of fish have totipotency
多年來，國內外學者對各種魚類精液的冷凍保存進行了大量的系統研究，目前這項技術已達到實用水平，並日益發揮作用；二是對魚類培養的組織細胞冷凍保存，通過魚類細胞的培養、超低溫凍存、解凍后再培養過程，結合細胞工程技術（如核移植、電融合等）進行體細胞育種；大量的研究結果表明魚類體細胞核具有發育的全能性，隨著細胞培養技術、細胞工程技術日益發展成熟，完全具備實現魚類物種種質長期保存的理論基礎和技術條件。Comparing to the direct drain cool - down process used in china, the natural precooling cycle, which may save the propellant of the precooling, simplify the prestart program, delay the ignition of the rocket and be more safe in the process of precooling as well is employed in this paper
國外在該項領域的技術已經在實際火箭發射場得以應用，相比之下，我國仍採用排放式的預冷方法。因此，需要研究低溫液體火箭發動機循環預冷的方法，盡快實現趕超發達國家的目標。The best parameters of electroless plating were observed. results demonstrated that by utilizing the ultrasonic into the electroless plating, the reaction can reacted in lower temperature and the self - decomposition of the solution can be prevented
對陶瓷粉末化學鍍鈷法制備金屬陶瓷復合粉末的研究表明：通過在粉體化學鍍中引入超聲波，使得反應可以在較低溫度下進行，防止了鍍液的自分解。Chart industries vacuum insulated pipe systems are designed for the transfer of cryogenic liquids at extremely cold temperatures needed for flash freezing, aerospace applications, super conducting research, liquid nitrogen fogging for special effects, and many more applications
查特真空絕熱管道系統的設計是為需極低溫度深冷液體應用：冷凍，航空，超導研究，用液氮產生特殊效果的煙霧，及其它各種用途。As a result, yangshan gold deposit is mainly derived from metallogenesis of mixing metamorphic fluid and magmatic hydrothermal fluid, hence showing multiple genetic and compounding metallogenic features, typical of a super - large hydrothermal ( medium to low temperature ) gold deposit
因此，陽山金礦主要是由混合型變質成礦流體與巖漿熱液成礦流體疊加形成，具有多因復成成礦特徵的超大型中低溫熱液金礦床。The large - scale superconducting magnets are presently widely used in modern high - energy particle accelerators and nuclear fusion experimental device, which generally operate at liquid helium temperature region. cryogenic technology is developing with the requirement of operation for superconducting magnets
而超導磁體大都運行在約4 . 5k （ - 269 ）的液氦溫區，這又促進了低溫技術的發展。Especially, in the filed of high tc superconductor, the technology that the cryocooler directly cool the superconducting system has changed the traditional cooling manner, which adopts the method of low tc fluid helium ' s convection and boiling to exchange the heat. it mainly depends on the cooling manner of conducting heat through the interfacial layer between the material of superconductor and non - superconductor ( such as cu, isolator, etc )
特別是在高溫超導領域中，由於製冷機直接冷卻技術改變了傳統的靠低溫液氦對流、沸騰換熱的冷卻方式，主要依靠超導材料與非超導材料（如銅、電絕緣材料等）固體間的接觸導熱冷卻方式，固體間界面熱阻成為影響導熱性能的關鍵因素之一。分享友人