查询词典 temperature difference

In this paper,we reviewed the sites of damage under chilling temperature,such as effects of low temperature on membrane,two photosystems and some enzymes in Calvin cycle,the chillingsensitive components that exist in plants in vivo and the way of improving the ability of defending photoinhibition under low temperature.

本文论述了低温对植物伤害的原初反应，例如低温对膜的伤害、低温对两个光系统和卡尔文循环中某些酶类的影响，并讨论了植物体内的冷敏感组分以及提高植物防御低温光抑制能力的途径。

Deep grand of far water shade drop in temperature principle: Water shade and fan install the two sides wall in workshop respectively, when fan convulsions, make the air of workshop forms negative pressure, the not saturated air outside forcing workshop sheds the surface with classics water poriferous and wet shade, cause moisture to evaporate absorb a large number of latent heat, drop the temperature of air oneself thereby, below the action of fan, the humid air of these temperature that be redu

深弘远水帘的降冷元理：水帘微风机分别装在车间的双面墙头，风机抽风时，使车间的空气air产生负压，强使车间外未饱满的空气air流经水帘多孔湿滑的外面，引发水份辉发吸收非常多潜热，进而下降空气air本身的温度，在风机的作用以及影晌下，这一些被下降温度的湿滑空气air就涛涛不停的步入车间。

The results showed that PPC was a thermotropic liquid crystal and displayed the cholesteric banded texture. The reaction conditions had the distinct effects on the propoxy content and liquid crystal property of PPC, with the reaction temperature and content of propionyl chloride increased, the degree of substitution of propoxy increased at the beginning, then trended to steady. The transition temperature and range of liquid crystalline phase were changed with the DS of propoxy, as the DS of propoxy increased, the melt point decreased, and the liquid crystalline phase transition temperature range of PPC get wider.

结果表明，产物PPC具有明显的热致液晶性能，且呈现出胆甾型液晶的彩色条纹织构；反应条件对产物丙酰基含量和液晶性能有显著影响，随反应温度提高和丙酰氯用量增加，产物丙酰基的取代度先增大，后趋于稳定；其相转变温度和温域随丙酰基取代度改变而相应变化，随丙酰基的取代度增大，产物的熔点降低，液晶温度范围变宽。

The psychrophilic enzymes is a kind that has high catalyst activety under the condition of low temperature and it is also a very important situation for the low-temperature catalyst to adapt to the low-temperature condition.

嗜冷酶是一类在低温条件下具有高催化活性的酶，也是低温微生物适应低温环境生存的重要条件。

A method for cold transportation of goods that are placed in a hollow-walled refrigerating container, comprising the following steps: storage of a pumpable solution of tiny ice crystals, known as binary ice, having a given composition and temperature, in a binary ice store until said binary ice is used for refrigerating or filling purposes; the optionally filled wall of the refrigerating container that is to be used is emptied via an outlet valve for the binary ice; binary ice is allowed to circulate inside the refrigerating container via filling instruments that are supplied with binary ice from the binary ice store until the temperature of the wall drops to a given temperature, whereby the heated fluid that is discharged from the outlet valve is fed to a binary ice fluid store; the wall of the refrigerating container is filled with a given amount of binary ice; the refrigerating container is decoupled from the filling instruments; the binary fluid that result from the melted binary ice is returned to a corresponding binary fluid store in order to produce new binary ice from said binary fluid.

一种置于一中空壁制冷容器里的制品的冷运输用的方法包括下列诸步骤：将一种具有一预定的组成和温度的可被泵送的小的冰晶体的溶液保存在一个二元冰储槽中，直到所述的二元冰用于制冷或充填目的；通过一二元冰出口阀将待被使用的一制冷容器的随意被充填的壁排空；用二元冰充入该制冷容器的被排空的壁内；通过充填器具使该二元冰在该制冷容器里循环，这循环由来自二元冰储槽的二元冰供给，直到壁温下降到一预定值，从而从该出口阀放出的被加热的流体被提供给一个二元冰流体储槽；将一给定量的二元冰充入该制冷容器的壁里；从诸充填器具上拆离该制冷容器；将从溶化的二元冰形成的二元流体返回到一相应的二元流体储槽内，以便从所述的二元流体制取新的二元冰。

with high development of railage,the axle—temperature of train is quite important for the safety of railage.traditional axle—temperature detected methods can′t match the safe needs of railage.this paper introduces a axle—temperature detect system based on wireless sensor network.this system uses low energy consumption mcu——msp430 and wireless communication module nrf905.it′s placed under the boxcars,form network by wireless communication.it has a high credibility,low cost,extensible and long life cycle.

摘 要：随着铁路高速重载战略的实施，准确地检测列车轴温关系到铁路运输的安全。针对货运列车的特点，分析了传统轴温检测方式存在的各种缺陷，提出了一种基于无线传感器网络的货运列车轴温探测系统的设计方法。该系统采用msp430单片机和nrf905无线通信模块，安装于货车车厢底部，可通过自组织的方式形成网络，具有可靠性高、节点成本低、网络可扩展性好、生存周期长等优点。

with high development of railage,the axle—temperature of train is quite important for the safety of railage.traditional axle—temperature detected methods can′t match the safe needs of railage.this paper introduces a axle—temperature detect system based on wireless sensor network.this system uses low energy consumption mcu——msp430 and wireless communication module nrf905.it′s placed under the boxcars,form network by wireless communication.it has a high credibility,low cost,extensible and long life cycle.

针对货运列车的特点，分析了传统轴温检测方式存在的各种缺陷，提出了一种基于无线传感器网络的货运列车轴温探测系统的设计方法。该系统采用msp430单片机和nrf905无线通信模块，安装于货车车厢底部，可通过自组织的方式形成网络，具有可靠性高、节点成本低、网络可扩展性好、生存周期长等优点。

At first,ecological mat can effectively reduce soil temperature of the soil layer from 0 cm to 15 cm,in detailed,the average daily soil temperature can decrease 2.06℃ to 4.56℃,which is benefit to reduce soil evaporation in high temperature;During the rainless period,the soil moisture content covered by ecological mat is much higher than mobile sand,especially,the soil moisture content of the layer form 0 cm to 15 cm always keep ...

首先生态垫能够显著降低沙地0~15 cm的土壤温度，日均温可降低2.06~4.56℃，有利于沙地高温条件下减少土壤蒸发；在连续无降雨的情况下，生态垫下各层次的土壤含水量都高于流动沙丘裸地，尤其是15~30 cm含水量相对稳定，人工植被建立后，其保存率、生长量较流动沙地均有较大幅度的提高。

On the basis of existing study and report, the types of high temperature solid lubricants are renewedly introduced, and the depositing processes of high temperature solid self-lubricant coatings are explained. The concept of designing coatings is introduced, and trend of development of high temperature solid self-lubricant coatings is pointed out.

本文在综合国内外研究和报道的基础上，归纳了高温固体润滑剂的类别划分，阐述了高温固体自润滑涂层和制备工艺的发展，提出了高温固体自润滑涂层设计的概念，指出了高温固体自润滑涂层发展趋势。

NO+NH3 temperature-programmed reaction runs over reduced catalyst samples pretreated with various oxidizing species showed that both NO2 and HNO3 were able to reoxidize the V catalyst at much lower temperature than gaseous O2: furthermore, they significantly enhanced the NO + NH3 reactivity below 250 C via the buildup of adsorbed nitrates, which act as a surface pool of oxidizing agents but are decomposed above that temperature.

不+NH3 温度-规划反应奔跑结束减少催化剂样品预先处理与各种不同的氧种表示两者的没有 2 和 HNO3 能够到再氧化 V 催化剂在非常低的温度超过气体的 O2：此外，他们重要地可提高的那不+ NH3 反应度在下面 250？C 经由组织吸附硝酸盐，哪一个行为当做一表面池氧代理人但是被分解上方哪一温度。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。