| 1. | Mineral insulating oils . determination of kinematic viscosity at very low temperatures 矿物绝缘油.甚低温条件下运动粘度的测定 |
| 2. | Mineral insulating oils - determination of kinematic viscosity at very low temperatures 矿物绝缘油.在很低的温度下运动粘稠度的测定 |
| 3. | In winter , the continental land mass cools off rapidly , resulting in very low temperatures over central asia 在冬天,亚洲大陆迅速冷却,导致其中部十分寒冷。 |
| 4. | In winter , the continental land mass cools off rapidly , resulting in very low temperatures over central asia 在冬天,亚洲大陆迅速冷却,导致其中部十分寒冷。 |
| 5. | Mineral insulating oils - determination of kinematic viscosity at very low temperatures iec 61868 : 1998 ; german version en 61868 : 1999 矿物绝缘油.在极低温度下运动粘稠度的测定 |
| 6. | Only when the flower must is ready , the fermentation is taken to a very low temperature to obtain a more expressive wine 只有精华果汁呼之欲出的时候,才在极低的温度进行发酵,获取更富有表达力的葡萄酒。 |
| 7. | Although it occurs only at very low temperatures , superconductivity has a wide variety of present - day uses , as well as potential future applications 虽然超导现象只能发生在极低的温度下,但不论是现在或是未来,超导体都有广泛的应用。 |
| 8. | Because the lattice vibration is weak at very low temperature , the contributions of electrics and other low energy excitations become dominant parts of specific heat . therefore , we can study the micromechanism of many physical phenomena from specific heat measurement 在很低的温度下,由于晶格振动变得很弱,电子和低能激发贡献越来越突出,这对我们通过低温比热研究很多现象的微观机制十分有利。 |
| 9. | With the development of the technology of cell culturing and cell engineering , so it is possible to preserve fish species for a very long time . 3 ) using embryonic stern cells ( es ) . fish embryonic cell has the totipotency and is better f or breeding than somatic cell , but it can not so strong to resist the very low temperature 三是通过es途径。鱼类胚胎干细胞具有发育的全能性,利用鱼类胚胎细胞育种比体细胞更具有优越性,但耐超低温性不强,只有少数学者对鱼类胚胎细胞进行冻存及发育潜能的研究,还没有对鱼类胚胎细胞进行冻存培养的系统研究。 |
| 10. | 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 多年来,国内外学者对各种鱼类精液的冷冻保存进行了大量的系统研究,目前这项技术已达到实用水平,并日益发挥作用;二是对鱼类培养的组织细胞冷冻保存,通过鱼类细胞的培养、超低温冻存、解冻后再培养过程,结合细胞工程技术(如核移植、电融合等)进行体细胞育种;大量的研究结果表明鱼类体细胞核具有发育的全能性,随着细胞培养技术、细胞工程技术日益发展成熟,完全具备实现鱼类物种种质长期保存的理论基础和技术条件。 |