开沟

Based on theoretic research, rotary-ditch machine is produced and orthogonal test is carried out in the farm. By variance and extreme deviation analysis on the test result, all the influence factors on ditcher casting performance are gained, superior level and optimum combination are found out, relation curve of performance target along with factor change is provided.

在理论研究的基础上，设计并制作开沟部件，在田间对其进行了正交试验，对试验结果进行极差分析和方差分析，得出各因素对开沟抛土性能的影响，找出各因素的较优水平和最优组合，并给出性能指标随各因素变化的关系曲线。

Fictile tiles of three different shapes are first baked and then masoned into triangular irrigation pipe in ditch before the ditch is refilled.

该管道是先用粘土制成三种形状的薄片砖坯后烧制成陶砖；而后在田地里开沟，再在沟内用三种薄片砖铺砌成三角形陶管，沟内最后回填土踩实。

A plow equipped with a double moldboard that turns up the soil on each side of the furrow, often having an attached drill for seed planting.

双壁开沟犁犁头后部有两块曲面铁板的犁，可翻开犁沟两边的泥土，常附有播种机注意，注意力集中

A plow equipped with a double moldboard that turns up the soil on each side of the furrow,often having an attached drill for seed planting.

双壁开沟犁犁头后部有两块曲面铁板的犁，可翻开犁沟两边的泥土，常附有播种机那个农民将牛缚在犁上，用刺棒驱赶它们。

A plow equipped with a double moldboard that turns up the soil on each side of the furrow ,often having an attached drill for seed planting.

双壁开沟犁犁头后部有两块曲面铁板的犁，可翻开犁沟两边的泥土，常附有播种机

The second is a multi-beam structure, such as the use of cusp-type trencher Australia's seeder Wudaoliang general, beam and beam of about 1m apart about ditching devices were arranged in a different beam.

二是采用多梁结构，如澳大利亚采用尖角型开沟器的播种机一般有五道梁，梁与梁相距约1m左右，开沟器分别布置在不同的梁上。

It includes ditching and ridging machine, ditching and pipelaying machine, shovelling and slinging machine, groundlevelling machine, and other machinery for farmland capital construction.

包括开沟筑埂机、开沟铺管机、铲抛机、平地机、其他农田基本建设机械。4。种植机械。

In this work based on existing furrow opener, point data of furrow opener's surface were obtained with reverse engineering technique and 3D reconstruction was conducted with a software in order to attain computational model of furrowing opener surfaces.

在本工作中，第一步，在已有芯铧式开沟器的基础上，采用逆向工程技术，获得其触土面点云数据，应用点云处理软件对点云进行三维重构，得到开沟器触土面的计算机模型。

Analyzed on dynamics and kinematics about rotary ditching machine , it is feasible and advanced on practice test.

通过对前置上切削旋转开沟机具运动学、动力学的分析和计算，以及对前置上切削旋转开沟功耗的分析，解决了小功率管理机挖深沟的问题；通过试验和生产考核，证明了该套机具可行性与先进性。

Stagger double discs opener is researched to solve the problems of blocking easily and pushing out stubble to make covering difficult for sharp-angled opener.

错开式双圆盘开沟器主要是为了解决尖角开沟器在大玉米根茬地免耕播种时，易挂茬造成堵塞，或挑出根茬造成覆土不足等问题而研究的。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。