查询词典 medium-term

In light of Fresnel formula the author analyses the features of linearly polarized light reflecting on the surface of apparent medium,discusses the relationship between the circumrotation in the plane of vibration,changes of the light intensity and the angle of incidence,the orientation of the plane of vibration,and addresses the relationship between the swing,phase and the incident angle and medium.

自然光在分界面上反射的一些特点在许多光学教材[1，2]上都进行了介绍，本文根据菲涅耳公式和菲涅耳定律，分析线偏振光在透明介质分界面上反射时的一些特点，讨论反射光的振动面所发生的旋转及光强度的变化与入射角、振动面的方位之间的关系；进一步讨论在全反射情况下，反射光的振

Plantlet regeneration from cotyledon of Citrullus lanatus cv. Zhangkang No. 4 was studied. The results showed that aseptic seedlings should be cultured in dark for 3d, then exposed to a photoperiod of 16/8h/d for 3d. The callus induction rate was higher in cotyledons placed facing downwards to the medium than in those facing upwards. The highest induction rate occurred in MS medium containing 6-BA (2.0mg/L), kinetin (1.0mg/L)and GA3 (1.0mg/L). The induction initiated in dark and took 7 days, while callus growth and differentiation proceeding for 7 days under 16/8h light-dark cycles. A highest rate of embryogenic callus was obtained after 3 successive subcultures.

以无子西瓜郑抗4号无菌苗子叶为外植体，进行了体细胞胚发生及植株再生的研究，结果表明，无菌苗应先进行3d暗培养，然后采取光照16h/d和黑暗8h/d培养3d；将子叶的叶面朝下放置于培养基上的愈伤组织诱导率高于叶面朝上的培养方式；子叶诱导胚性愈伤组织的最适培养基配方为MS+6-BA2.0mg/L+KT1.0mg/L+GA31.0mg/L；诱导需要在黑暗条件下启动，进行7d暗培养，而生长分化于光照16h/d和黑暗8h/d条件下培养7d；继代3次得到的胚性愈伤组织最多；最适生根培养基配方为1/2MS+IBA0.3mg/L。

The tremendous business chance that aviation medium brings without the characteristic of accurate sale of energy of commutable high end and Olympic Games makes company of domestic aviation medium already more and more get the favour of capital market.

航空传媒无可取代的高端精准营销的特点以及奥运会带来的巨大商机使得国内航空传媒公司已经越来越受到资本市场的青睐。

This conglomeratic sand body has the characteristics of medium-high permeability, medium-high porosity, fairly serious heterogeneity and sensitivity. The lateral strong heterogeneity is in the northern part and the vertical one is in the upper part.

该砂砾岩体虽具有中高孔、中高渗储集层特点，但存在较严重的非均质性和敏感性问题，平面以北部非均质性最强，纵向以上部非均质性更严重。

The biotechnology production efficiency of crocin II, which has anti-cancer activity, was improved in a solid-liquid two-step cell culture in which the callus cells obtained from the solid medium were transferred to the liquid medium.

为提高现代生物技术生产藏红花素的产率和效率，该研究采取固液两步培养法将在固体培养基中获得的藏红花愈伤组织转移到液体培养基中进行生物合成，结果显示生物反应器比摇瓶培养更有利于生物量的积累，也更有利于2号藏红花素的合成。

The Mg content in crustose aerial hypha and rhizomorphs of A. mellea increased with increasing Mg concentration in growth medium up to a concentration of 16 g/L, but ceased to increase when the Mg concentration in medium was over 16 g/L.

皮壳状菌丝和菌索中Mg的含量随培养基中Mg浓度的增大而增大，培养基Mg浓度达到16 g/L后，菌丝、菌索中Mg的含量都不再上升。

Aim To investigate the production and removal of cyclobutane pyrimidine diners after UVB irradiation and the effect of baikal skullcap root, szechwan lovge rhizome and epigallocatechingallate on the irradiation damage in HaCaT cells, and finally, to clarify the probable regulatory mechanisms. Methods HaCaT cells were cultured in RMPI-1640 medium with 10% fetal bovine serum. The time and dosage of UVB irradiation were conducted according to the experimental design. Tested medicines were added into the medium before or after UVB irradiation.

目的 观察中波紫外线辐射后HaCaT细胞光产物胸腺嘧啶二聚体(cyclobutanepyrimidine dimers， CPDs)的生成和清除情况及3种中药活性成分：黄芩(baikal skullcap root， BSR)、川芎(szechwan lovge rhizome， SLR)和表没食子儿茶素没食子酸酯[-epigallocatechin-3-gallate， EGCG]对该过程的干预情况并探讨上述药物对相关调控分子的作用机制。

The result indicated, In the MS culture medium, and the damagement increased with Pb(superscript 2+) concentrition, when Pb(superscript 2+) concentration was up to 1000μmol/L, the callus was geatly damaged and its character is small, hard, skin drying; Organic acid of suitable concentration was able to improve the induction and growth of rice callus under the Pb(superscript 2+) stress, i.e. ascorbic acid, critic acid and oxalic acid The effect was the best which added 750 mol/L citric acid in MS culture medium, the callus was fresh, light yellow, loose, the surface moist. and survival was as higher as controlled treatment.

而添加不同有机酸（抗坏血酸、柠檬酸和草酸）均可明显改善Pb(上标 2+)胁迫下愈伤组织的生长，尤以750μmol/L柠檬酸对Pb(上标 2+)毒害的缓解效果最佳，其愈伤组织块颜色浅黄，表面湿润，愈伤组织成活率高，与对照愈伤组形态较接近。

To study the growth factor called medium that makes bacteriabreed rapidly and to identify the bacteria within the same system so as to prevent resistant strains. Methods Bacteria were cultured in V type medium and i dentification and drug susceptibility tests were performed.

通过对促细菌快速生长繁殖因子即细菌培养基成分进行科学配比研究，促使细菌能快速生长繁殖，并在同一体系内同时对细菌进行鉴定防止耐药菌株泛滥作了初步探讨[1，2]。

In hypoxia/reoxygenation model(Na2S2O4), cell survival was enhanced and LDH in culture medium was reduced(P.05, P.01) after treated with 60, 30μgmL^(-1) Sanguis Draconis flavones. Enhanced cell survival and reduced LDH in culture medium(P.05, P.01) also observed in cytotoxicity model induced by H2O2 after incubated with 60, 30, 15μgmL^(-1) Sanguis Draconis flavones.

在缺氧／复氧(Na2S2O4)模型中，60、30μgmL^(-1)龙血竭总黄酮能显著降低培养液中的LDH浓度，增强细胞活力(P.05， P.01)。60、30、15μgmL^(-1)龙血竭总黄酮能抑制H2O2引起的损伤，降低培养液中LDH的浓度，增强受损细胞活力(P.05， P.01)。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。