Disc infiltrometer with two diameters(diameter of 5cm and 15cm) and two distinctly textured soil(Yangling caly soil and Shenmu sandy loam soil) were used to carry out disc 3-D laboratory infiltration experiment under five pressure heads (0,-3,-6,-9,-12 cm).
选用盘径为5 cm和15 cm的盘式吸渗仪,对杨凌土(粘土)和神木砂黄土(砂壤土)两种质地的土壤在0、-3、-6、-9-、12 cm水头5种负压下进行了室内吸渗实验,分析了不同盘径和负压对累积吸渗量的影响;并选用4种吸渗率公式对这两种质地土壤吸渗率进行了计算,以Vandervaere法为参考方法对该4种方法的适用性进行了分析。
Two diameters of disc infiltrometer(5 cm and 10 cm) and two distinctly textured soil(Yangling caly soil and Shenmu sandy loam soil) were used to carry out disc 3D laboratory infiltration experiment under five pressure heads(-1,-3,-6,-9,-12 cm H2O).
选用直径5 cm和10 cm的盘式吸渗仪,对杨凌土(粘土)和神木砂黄土(砂壤土)两种质地的土壤在1 cm、3 cm6、cm9、cm和12 cm水头5种负压下进行了室内盘式吸渗仪三维吸渗实验,选取Vandervaere公式作为参考模型,对Philip公式确定吸渗率的时间尺度选取进行了分析。
Two main reasons about the low dredging efficiency of the cupule dredging boat in low water sections are pointed out by analyzing the ejection angle and structure of the nozzle;and by changing them, the e-jection function can be advanced greatly; the ways are put forward.
通过对吸盘式挖泥船浅水航道疏浚作业时吸盘头喷嘴喷射角度及喷嘴结构的分析研究,指出了浅层开挖时工作效率低的两个主要原因,并提出了通过改变吸盘头喷嘴喷射角度及喷嘴结构可以极大的改进吸盘式挖泥船喷嘴喷射功能的方法。
magnetic traveling crane
电磁吸盘式门式起重机
magnetic travelling crane
电磁吸盘式移动式起重机
Controlled pneumatic materiel conveying system based on PLC
基于PLC的气动吸盘式物料传送装置
Dedign of a Wall-Cleaning Robot with Several Suction Cups;
多吸盘式玻璃幕墙清洗机器人本体设计
Research and development of a wall-climbing robot with vacuum suckers for glass cleaning
真空吸盘式爬壁清洗机器人的研究与开发
Research on vacuum of a level-sucker precision metering device for rice seedlings
水平吸盘式水稻育秧精密播种装置吸种真空度的研究
The Design and Research of a Needle-aspiration Hill-drop Automatic Drill;
针吸式穴盘自动播种机的设计与研究
EXPERIMENTAL STUDY OF THE THERMAL PERFORMANCE OF THE RECEIVER WITH THE DISH TYPE CONCENTRATOR SYSTEM
盘式聚光系统吸热器热性能实验研究
The Methods Study on Calculating Soil Hydraulic Characteristic by Disc Infiltrometers;
盘式吸渗仪测定土壤水力参数方法研究
Research on System of Detect-Controlling Automatically Seeder by Magnetic Force for Plug Seedling;
磁吸式穴盘播种器自动监控系统的研究
Theoretical and Experimental Study on the Rice Precision Suction Suction Seeder;
气吸式水稻钵盘精量播种机的理论和试验研究
A Design of Aspirating Precision Seeder for Sowing Rice in Cupulate Compartment Tray;
气吸式水稻钵育秧盘精量播种机的设计
Seeding Pipeline Design of Suction Blanket-type Raise Rice Seedling for Super-rice
气吸式超级水稻毯状苗盘育秧播种流水线设计
Qwerty keyboard
qwerty式健盘
Disc brush, standard, Longlife fan, Tank-in-tank system.
标准盘刷2个，箱中箱式水箱设计，长寿命抽吸风扇。
The circular permanent-magnetic chuck can be classified as straight stripe fine– pole type, ordinary pole type and radial pole type.
圆形永磁吸盘按其结构可分为直条密极，普通极和辐射状极等形式。
Analysis of the Motion Characteristic and Application Study of Wall-Climbing Robots with Sliding Suction Cup;
带滑动式吸盘的爬壁机器人运动特性分析及其应用研究
The Research and Design of Precision Magnetic Plug Drum-Seeder Automatic Control System;
磁吸滚筒式穴盘精密播种器自动控制系统研究与设计