trench jack

用法例句

Study on the dynamic characteristics for trenching implement of chain-type trencher;

链式挖沟机挖沟器的动态特性研究

In this paper,the structure and main parameters of furrow-ridge-opener are analyzed.

起垄开沟器是灌水沟播机的主要工作部件，它需同时完成起垄、开沟、灌水、施肥等多项工作。

Application and Theory Research on the Furrow-ridge-opener of Water-application-furrow Seeder;

灌水沟播机起垄开沟器理论及应用研究

The machine is suitable for cultivating in the field of corn, soybean and beet, etc. It can be used for cultivating, furrowing, ridging and deep loosening.

用于玉米、棉花、大豆等作物的中耕作业，能完成中耕、开沟、起垄、深松等作业。

Study and Design on Ridge Culture Furrow Irrigation of Wheat Seeder;

畦作沟灌小麦起垄播种机的研究与设计

The Influence of Slope Soil Erosion of Corn Growth in Double-ridged Field;

玉米开沟双垄种植对坡地水土流失的影响

To form grooves or deep wrinkles in.

在…开出沟槽，使起深皱纹

twin-disk drill

双圆盘开沟器的条播机

hoe-colter drill

带锄式开沟器的条播机

Research on Upright Helix Furrowing Opener and Characteristics of Ditching Machine;

立式螺旋开沟器及开沟机整机特性研究

The slope-sliding of Union Valley Open Pit Mine began at the mine development stage.

团结沟露天矿从基建时起即开始滑坡。

A Preliminary Study on the Origin,Development and Decline of Zhukaigou Culture;

试论朱开沟文化的起源、发展与消亡

Development and Appliance of Ditch Digger in Crop Plot Test

农作物小区试验开沟器的研制与应用

"I raised him up out of nothing, right out of the gutter.

“是我把他从零开始培养起来，从阴沟里捡起来的。

Studies on Double-disc Ditching Examination Engineering Research Based on Virtual Instrumentation

基于虚拟仪器的双圆盘开沟器检测技术的研究

Numerical Simulation of Ground Subsidence Induced by Underground Excavation on Shirengou Mine;

石人沟铁矿地下开采引起地表沉陷数值模拟

Affect of Whole Covering on Double Ridges and Planting in Catchment Furrows Maize on Yield Increase of Dry Land

旱地全膜双垄沟播玉米增产效应研究

Design and Experiment of 1QL-70 Bed Former for Permanent Raised Beds

1QL-70型固定垄起垄机设计与试验

Digital Design Method of Furrow Openers Based on DEM;

基于离散元法的开沟器的数字化设计方法研究

The Researches on Watering Performance of the Opener of Regulated Deficit Irrigation Seeder;

调亏灌溉播种机开沟器施水性能的研究