根条件

The results implied that cell karyokinesis could be promoted at low concentration and be restrained at high concentration.

在一定低浓度条件下，蚕豆根尖细胞有丝分裂指数增高，高浓度下有丝分裂指数降低，意味着低浓度可促进细胞有丝分裂，高浓度则会抑制细胞有丝分裂。

There are two direct factors for notion about the difference of occurrence of Se, that is sulfurcontent in the kerogen and the condition of redox.

两种不同的赋存状态可能主要取决于干酪根中硫含量的多少以及成矿时氧化还原条件的变化。

Plant height, leafstalk length, leaf length, leaf width and leaf thickness of water hyacinth did not vary significantly at the range of pH 3.5 to 9.0, while root length, stolon length and root vigor declined obviously with the increasing pH.

随营养液pH值升高，水葫芦的相对生长率从6.12倍降到3.08倍。pH值在3.5—9.0之间，水葫芦株高，叶柄长度，叶片的长度、宽度和厚度在不同酸度条件下无显著差异，根长、茎长和根系活力随pH升高明显下降。

Thus, on this line of reasoning, existence isn''t a great-making property because it is not a property at all; it is rather a metaphysically necessary condition for the instantiation of any properties.

因此在推理的这根线上，因为它根本不是一个性质，存在不是一个大做的性质；它是为任何性质的实例化的一个先验地必要的条件。

The results indicate that the different concentrations of alum can induce high frequency of micronucleus and chromosome aberration.

结果表明，不同浓度明矾在不同处理时间内均能诱发较高微核率和染色体畸变率，且在同样的条件下，蚕豆根尖细胞的微核率和染色体畸变率明显高于大蒜的(p.01或p.001)。

In this study, the crude LDH extract were obtained from mycelium of Rhizopus oryzaeAs3.819 and its properties were studied.

本研究从米根霉As3.819中初步分离出乳酸脱氢酶，并结合发酵条件对其酶学特性进行了研究。

Methods A life-size plaster cast of human head was used as the anthropomorphic model. Fifteen experimental conditions were studied. Nine linear distances between landmarks and Nasion were measured each time. These were compared to the standard anthropometric measurements using the same landmarks.

以石膏头像为研究对象，用系统在15种不同条件下测量模型面部9个点至鼻根点的距离，以用游标卡尺得到的测量结果为评判标准与前者比较。

The yield and regioselectivity were investigated at various ratios of nitrate to salicylate with copper nitrate comparing with nitrous acid.

对比研究了在不同硝酸根和水杨酸甲酯配比条件下用硝酸铜和硝酸作硝化试剂时的硝化收率和区域选择性。

Culture tender leaves in culture medium of MS+2,4-D1.5mg/L+30g/L suger+0.7% agar pH5.8 for 20 days in darkness at 25℃, and then subculture to induced Ⅱ-type calli. Use forceps cutting the tissue to nubble with 2mm2, and put the tissue into Agrodacterium tumefaciens LBA4404 liquid supplemented with AS 100mg/L,then, co-culture 3 days, resume 7 days in MS+2,4-D1.5mg/L+30g/L suger+500mg/L cef, take to MS+2,4-D1.5mg/L+30g/L suger+100mg/L cef+10.0mg/L kanamycin culture 20 days in darkness. After that to make it polarize in MS+30g/L suger+100mg/L cef+10.0mg/L km. The percentage of km resistant callus was reached max after infection for 45 min, the average is 29.66%. Simultaneity, tender leave callus are infected 5 min by A. tumefaciens liquid in different negative pressure, and kept on 15 min in Agrodacterium tumefaciens liquid without negative pressure. Then screen out resistant callus and obtain transgenic plants. When the negative pressure is -0.05MP the percentage of km resistant callus was reached max, the average rate is 37.5%.

将心叶接种于MS+2.4-D1.5mg/L+30g/L 蔗糖，琼脂0.7%，pH5.8 培养基中25℃暗培养20d 后继代一次，诱导产生Ⅱ型胚性愈伤组织，用镊子将其夹碎成2mm2大小的小块，置入添加100mg/L AS 的根癌农杆菌LBA4404 菌液中，侵染时间为45min，共培养3 天后，转入MS+2.4-D1.5mg/L+30g/L 蔗糖+500mg/L Cef 培养基中恢复7天，再转入MS+2.4-D1.5mg/L+30g/L 蔗糖+100mg/L Cef+10.0mg/L Km 中，遮光培养20d后，置入其MS+30g/L 蔗糖+100mg/L Cef+10.0mg/L Km 分化，卡那霉素抗性愈伤组织获得率在侵染45min 时达到最大值平均为29.66%；同时以甘蔗心叶愈伤组织材料，通过循环水式真空泵，产生负压，设定不同的负压值，在农杆菌菌液中感染5min 后，在负压条件下继续侵染15min 后，筛选出抗性愈伤组织并获得转化植株，其中在负压为-0.05 时转化率达到最大值，其卡那霉素抗性愈伤组织获得率平均为37.5%。

Davidii seedlings. Two-month-old seedlings were grown under water supply regimes of 100, 80, 60, 40 and 20% water-holding capacity, respectively, in an open-sided greenhouse.

结果显示，胁迫处理96d后，100% WHC条件下白刺花幼苗的总叶面积、分枝数、基径及最大根长等均最大；80% WHC对幼苗产生了轻度胁迫，随着干旱胁迫强度的进一步增加，幼苗生长显著减小。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。