1) semilethal temperature
半致死温度
1.
The adaptation of Rhododendron Fortunei s semilethal temperature to natural temperature falling;
云锦杜鹃低温半致死温度对自然降温的适应
2.
The semilethal temperature of C.
用双荚槐和伞房决明的1年生枝条为试材,通过低温处理,用电导法测定它们的相对电导率,并用Logistic方程拟合求拐点值来估计其半致死温度,探讨它们的抗寒性。
3.
25 different cucumber inbred lines resisting low temperature were taken as materials in this research,compared morphological standards,comparative in normal temperature and semilethal temperature in seedlings.
对25个耐低温性不同的黄瓜自交系进行低温处理,试验通过对幼苗在低温下各形态学指标与常温相对百分率及半致死温度的分析,对各自交系进行了耐低温性的初步鉴定结果表明:9503,9504,9507,9513,9524,9525共6个自交系属于高抗材料;9501,9502,9505,9508,9509,9511,9512,9514,9515,9516,9518,9520,9522,9523共14个自交系属于中抗材料;9506,9510,9517,9519,9521共5个自交系属于低温敏感材料。
2) Semi-lethal temperature
半致死温度
1.
Five provenances of Zenia insignis were used as materials to observe their leaf structural features by epidermal and paraffin slice methods, measure leaf semi-lethal temperature by electric conductivity, and measure leaf supercool point temperature by differential scanning calorimetry.
以5个种源的翅荚木叶为材料,采用叶片离析法和石蜡制片技术观测叶片结构特征、电导率法测定其半致死温度、差示热量扫描仪测定其过冷点温度,并结合田间试验分析不同种源翅荚木苗期的抗寒性及其与叶片结构的关系。
2.
Meanwhile the semi-lethal temperature of these tree species were evaluated from Logistic equation to indicate their cold resistance.
以不同年龄的5个木兰科和1个冬青科常绿阔叶乔木树种为试材,模拟自然低温胁迫处理,测定其相对电导率,并通过拟合的Logistic方程求其拐点值来估计树种的半致死温度,探讨其抗寒性大小。
3.
The result showed that the relative moisture,free moisture and starch contents of leaf decreased,and the bound moisture,soluble sugar,soluble protein and proline contents increased with a drop in low semi-lethal temperature.
以云锦杜鹃为材料,研究了其叶片低温半致死温度与水分和渗透调节物随气温下降的变化。
3) LT50
半致死温度
1.
By using experimental ecological methods,the 24 hours semi-lethal temperature(24 h LT50) of typical copepods living in the coastal area of East China Sea was determined to elucidate the effects of thermal discharge from power station on the coastal ecosystem.
为了探明热排放对近海生态的影响,选用我国东海近海主要桡足类,采用热升温实验方法对其半致死温度进行研究。
2.
The results showed that: there were differences among different germplasm, the LT50 was between -9.
结果表明:果梅种质资源的枝条抗寒性存在着很大的差异,经12h低温处理,其枝条的半致死温度为-9。
3.
The G6PDH activity in the absence or the presence of reduced dithiothreitol (DTTred) were determined, and the changes in superoxide dismutase (SOD), peroxides (POD) and cytosolic G6PDH activities, malondial-dehyde (MDA) content as well as freezing resistance (expressed as LT50) of.
对-20℃低温锻炼及脱锻炼过程中甜杨 (Populus suaveolens)幼苗的G6PDH、SOD和POD 活性、MDA含量和半致死温度(LT50)进行了测 定和分析。
4) LT_(50)
半致死温度
1.
The results were as follows,1) The (LT_(50)) of centipedegrass accessions ranged from -4.
采用电解质渗透法,对有代表性的38份中国假俭草及2份美国假俭草种源(品种)的抗寒性进行了初步研究,得出如下结果,1)中国假俭草种源半致死温度(LT50)的变化范围为-4。
5) semilethal temperature
低温半致死温度
1.
The results showed that with temperature decreased,the semilethal temperature(LT50) decreased increasingly.
结果表明:随温度的降低,低温半致死温度不断降低;渗透调节物可溶性糖、可溶性蛋白含量增加,淀粉含量下降;内源激素ABA含量上升,与低温半致死温度呈负相关(相关系数为-0。
2.
Using semilethal temperature(LT_(50)) as an index, the relationship between physiological properties and cold resistance of Gardenia jasminoides Ellis were studied during natural falling of temperature.
以低温半致死温度(LT50)为评价指标,研究自然降温过程中栀子(Gardenia jasm inoidesE llis)叶片生理特性与抗寒性的关系。
3.
Using electric conductivity method,the semilethal temperature of Taxus media cv.
利用电导法 ,测定了北美红豆杉的低温半致死温度 ,并与其生境中的气温变化相比较 ,结果表明 :北美红豆杉对引种栽培地的自然降温具有很强的适应
6) high semi-lethal temperature
高温半致死温度
1.
adenophorum invasion,seedling height,canopy width,branch number and high semi-lethal temperature(HSLT)were measured for six E.
紫茎泽兰是我国危害最严重的外来入侵物种之一,为探讨表型可塑性和局域适应在其入侵中的作用,在高、低海拔的两个样地内,测定了来自云南南部640～2450m海拔范围的6个种源的紫茎泽兰种群的株高、冠宽、分枝数和高温半致死温度(HSLT)。
补充资料：半导体电阻温度计
半导体电阻温度计
semiconductor resistance thermometer
比ndcoti dianzu Wenduii半导体电阻温度计(semieondueto:resistaneethen们幻meter)利用掺杂半导体的电阻同温度的关系进行温度测量的仪器。1955年，1.艾斯特曼等发现，含有一定浓度杂质的半导体锗的电阻一温度特性曲线合乎低温测量的需要，但由于引线同锗材料接触比较困难，复现性较差。1，日〕年前后，J.E.昆兹勒等人首先采用锗电阻温度计进行精密温度测量。此后，又发现接杂的硅亦可以用于测温。半导体电阻温度计用于精密测温时，通常将桥形电阻元件放进金属套管中，充人氮气以改善热交换，然后密封。但在热循环过程中，偶尔可以观察到电阻跳变，而且不可复原。因此，其复现性较差。半导体的温度系数是负值，即温度越低，电阻越高。因此，在低温时有很高的灵敏度。通常采用对数多项式表达电阻同温度之间的关系。(李邃然)
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参考词条