A dynamic field plant distribution model with the seed drop tube is established in this paper.
建立了精密播种机接输种管后田间植株分布的动态模型。
The transformation rule of diameter of droplets between cooling rate and undercooling can be analyzed in drop tube.
对落管中冷却速率和过冷度随液滴直径的变化规律进行了分析。
The influence of coal granule size on the emission characteristics of inhalable particles has been studied with a drop tube furnace.
采用沉降炉研究了煤粉粒径对可吸入颗粒物排放特性的影响。
Then, one sample was burnt in an electric drop tube furnace to study the evolution behavior of mercury in semi-practical combustion processes.
然后选取一个污泥样在滴管炉里燃烧，研究汞在接近实际燃烧状况下的析出行为。
Experimental investigations into the relationship between the coal concentrations and the ignition hoes in coal clouds are performed in a drop tube furnace.
在管式炉上对煤粉气流着火方式与煤粉浓度的关系进行了研究。
The char types of the various macerals and their combustion modes were investigated in detail according to the drop tube furnace and one-dimension coal combustibility tests.
本文依据沉降炉和一维煤粉燃烧特性试验，对不同显微组分的残炭类型及其燃烧方式进行了详尽的探讨。
Pulverized coals were burnt in a laboratory-scale drop tube furnace to study the swelling characteristic of char particles and its influence on emission of particulate matter (PM) during combustion.
该文通过煤粉在沉降炉中的燃烧，研究燃烧过程中煤焦的膨胀特性及其对颗粒物形成的影响。
People stream out of the nearby tube stations, the pavements are crowded, and taxis and private cars maneuver into position as they drop theatre-goers outside the entrance to each theatre.
人们从附近的地铁蜂涌而出，人行道很拥挤，出租车、私家车想方设法停到位，把看剧的人送到剧场的入口处。
The drop of suction pressure which is caused by flowing obstruct of linked tube leads to serious influence to refrigerant density.
连接管的流阻造成吸气压力的下降，对工质密度产生严重影响；系统中残留的冷冻油，阻碍制冷剂的蒸发。
Yan t the rest, the inflammation may affect the eustachian tube, has symptom which the tinnitus or the hearing drop.
严t的息者，炎症可波及咽鼓管，出现耳鸣或听力减退的症状。
On the basis of experiment of two-phase pressure drop, for air-water flow through horizontal tube, the effect of mass velocity on the two-phase pressure drop is analyzed.
在对空气-水在水平放置的圆管内流动时的两相压降实验的基础上，分析质量流速对两相压降的影响。
Medicine or distilled water to drop inside small volume to atomise glass inside and tube to join to the machine above.
药物或蒸馏水滴入小量喷雾杯内，并管子连接至机器上。
If all women took adequate folic acid before conception and during pregnancy, the number of babies born with a neural tube defect could drop by as much as 70 percent.
如果所有的妇女在怀孕前后获得足够的叶酸的话，该病的患病率可以下降70%。
The heat transfer enhancement and pressure drop of spiral tube with oval cross section and thick wall were investigated.
对椭圆断面厚壁螺旋管进行了强化传热和流体阻力实验研究。
Liaocheng high pressure boiler tube industry related enterprise expert points out, the domestic steel price future or will slightly downward, but may not drop substantially.
聊城高压锅炉管行业相关企业专家指出，国内钢价未来或将小幅下行，但不可能大幅下跌。
Using mixed tube bundle, high heat transfer coefficient can be acquired as well as pressure drop not too high.
采用混合管束既可获得高的总传热系数和管内外传热膜系数，又可以使管内压降不致过大。
Venturi tube is one of key equipments in process of purification and recovery of converter gas, which is used to drop temperature of converter gas with spraying jet fixed at throat of Venturi tube.
文氏管内部的流动与传热较为复杂，不仅涉及喷淋液滴与烟气在流动过程中的相互作用，而且涉及喷淋液滴遇到高温烟气发生相变进行的传热传质。
The effects on solids holdup of heat exchanger tube, bed height, static pressure drop and average solids holdup of inlet chamber by superficial velocity were studied in different main distributors.
在不同结构形式的主分布器条件下，研究了表观液速对换热管中固含率、下管箱内床层高度、静压降及平均固含率的影响。
Simply slide the tube out of the Exo Terra Cricket Pen and drop the flapper down to prevent escapes.
简单地滑管的外Terra板球钢笔和降下来，以防漏气的挡板。
The heat tranfer and pressure drop performance of cross flow longitudinally finned tube banks heat exchanger are reported.
结果表明，纵助管束具有低流阻特性和较强的传热强化作用。
Flow area that is 3-5 times that of the equivalent copper tube exchanger and self-cleaning action contribute to low pressure drop and low fouling potential.
流动面积为等效铜管换热器的3 - 5倍，具有自动清洁功能，因此其压降低，受污染可能性小。
Single - or multiple leakage test, by suppressing media filling quantity is small, if the tube bundle leakage, easy to from the pressure gauge on the fast show pressure drop.
单管或多管试漏时，因打压介质充填量小，若管束有漏点，易于从压力表上快速显现出压降。
The strength analysis of a drop-shaped tube is resolved into the following problem: axial compression together with a plane state of strain with uniform internal pressure.
把滴形管的强度分析问题分解为：沿管轴线方向的压力问题与管沿周线方向均布压力的平面应变问题的叠加。
The results show that the local heat transfer at the front part of the drop-shaped tube is similar to round tube, but apparent difference appears behind the detachment point.
结果表明：滴形管束局部换热规律在前端大圆部分与圆管管束相似，但在脱体点以后差别较大；
The simulation results indicated that heat pipe diameter, pipe length, tube pitch and fin structure had influence on the efficiency and pressure drop of heat pipe exchanger.
模拟结果表明，热管的管径，管长，管间距和翅片结构均影响热管换热器的换热效率和压力降。
The conventional method of heat transfer enhancement for turbulent flow in tube is to increase the heat transfer area, but it will increase the pressure drop across the tube significantly.
管内湍流强化传热方法一般是增加壁面换热面积，但这会显著提高管内流动阻力。
This paper mainly presents the results of experiments on heat transfer and pressuse drop of air flowing across four types of elliptical Finned-Tube banks .
本文主要论述四种叉排钢制矩形翅片椭圆管簇的传热及阻力试验研究结果。
Tube bundle fix the drooped structures through welding for both ends of upper header and make fly ash drop by rapping the end plate of lower header.
锅炉中的管束是上部集箱的两端通过焊接固定垂下的结构，通过锤打下部集箱的端板，振落飞灰。
Larger diameter of oil tube, fast drop on the temperature and slow drop on the pressure.
油管直径越大，温度下降越快，压力下降越慢。
The tube skin temperature of furnace dropped a lot; the furnace tube pressure drop was reduced, the effect of is significant.
加热炉炉管表面温度大幅下降，加热炉炉管压降减小，有效地减缓了加热炉炉管结焦。
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