我们的目的是探索为什么在熟地黄轮作中种植地黄后，芝麻的收成会急剧下降。
Our objective was to explore why Sesamum indicum yield declined severely when planted after Rehmannia glutinosa in crop rotation.
农作物轮作技术已经介绍给农民们了。
The technique of rotating crops has been introduced to the farmers.
我就下到窑匠的家里去，正遇他转轮作器皿。
Then I went down to the potter's house, and, behold, he wrought a work on the wheels.
轮作耕种是许多热带国家常见的农场经营方式。
Shifting cultivation is a common type of farming in many tropical countries.
利用长期轮作草场进行早期放牧是不切实际的。
水稻—蔬菜轮作的方式可减少有机氯农药污染的风险。
The rotation of vegetable and rice could decrease the risk of organochlorine pollution.
如果是中稻和小麦轮作，则可以只在水稻上施用锌肥。
Unde rotation of medium rice and wheat, zinc fertilizer could be only applied on rice.
豌豆是甘肃中部干旱地区重要的轮作、粮食和饲料作物。
The pea is an important rotation food and a forage crop in the central arid region of Gansu.
单一做法，可以将复种轮作系统的使用，边界，覆盖作物。
Monoculture practices can incorporate multiple cropping systems by using rotations, borders, and cover crops.
齿轮作为一种通用的传动机构，有其特殊的设计和加工方法。
As a kind of general driver machine, gear has its special method of designing and manufacturing.
轮作的四种作物是玉米、大豆、小麦和苜蓿，四年内每年种植一种作物。
The four crops grown in rotation are corn, soybean, wheat, and alfalfa, with one crop grown each year during the 4-year cycle.
凸轮作为一种通用的传动机构，有其特殊的设计和加工方法。
As a kind of. general actuating mechanism, CAM has its special method of designing and manufacturing.
本文对压缩理想气体和实际气体的离心式叶轮作了流场分析。
This paper presented the flow field analysis in centrifugal impellers compressing perfect and real gases respectively.
齿轮作为一种通用的传动机构，具有其特殊的设计和加工方法。
As a special kind of drive machine, gear has the special method of designing and manufacturing.
有一项研究，在美国对于玉米与大豆轮作的11处土壤进行了研究。
One study examined 11 soils in the US under a rotation of maize and soybeans.
土壤中的螺原体在轮作和已经干燥的土中能存活8 ～17年。
The Spiroplasma could survive for 8-17 years in the rotation or dried soil.
用一个滚动轮作为鼠标中键的鼠标非常流行，所以增加了对它的支持。
Mice with a scroll wheel as a middle mouse button are fairly popular, so support is being added.
本文介绍了一种利用接触式导轮作为传感器的内环焊缝自动跟踪装置。
The automatic internal girth weld tracker using contact type guide wheel as sensor is introduced in this paper.
在水旱轮作下，施用有机肥有利于紫色水稻土铁—腐殖质复合的形成。
Organic manure application favours the formation of Fe-humus complexes in purple paddy soils under water-dry rotation.
在北京潮土上研究了冬小麦-夏玉米轮作体系下土壤氮素反硝化损失。
Soil denitrification was studied in winter wheat-summer maize rotation cropping system with an aquic cambisol.
评估大地理区域内作物轮作水平是农业生产中必须解决的重要问题之一。
How to evaluate crop rotation level in large geographic area is one of the most important problems in agricultural production.
她的研究结果表明，减少排放要比只是减少氮肥的使用和改变作物轮作周期复杂得多。
Her results show that reducing emissions is more complicated than just cutting back on nitrogen fertilizers and changing crop rotation cycles.
梯牧草草地牛毛轮作草场对于饲养奶牛的主要价值，就在于其适口性好。
Much of the value of the timothy/meadow fescue ley for milk production is attributable to its palatability.
如果采用传统技术如轮作和堆肥为土壤补充氮和其他物质，就需要耕地也增长三倍了。
Using traditional techniques such as crop rotation, compost and manure to supply the soil with nitrogen and other minerals would have required a tripling of the area under cultivation.
1912年，安德列·雪铁龙开始用人字形齿轮作为雪铁龙公司产品的商标。
In 1912, Andre Citroen Citroen began employing shaped gear as a trademark of our products.
轮作是应用于有机农业上的一种简单而有效的技术，能减少农药的使用和提高土壤肥力。
Crop rotation is a simple and effective technique used in organic agriculture to reduce the need for pesticides and improve soil fertility.
综合防治措施包括烟-稻轮作、稻草还田、冬翻冬种、利用耐病品种和药剂防治。
Integrated control measures included tobacco rotation with rice, rice straw return to paddy field, winter ploughing and winter planting, use of tolerant rice cultivars.
本文叙述了在移动车轮作用下钢筋混凝土板的破坏试验结果和实际板的破坏机理。
The article expounds the results of the destruction test on reinforced concrete slab under moving wheels and the mechanism of slab destruction.
其次最常见的农作物，大豆，回报低，但轮作是必要的用以保证土壤能够拥有宽裕的玉米产量。
The second most common crop, soybeans, yields a lower return but crop rotation is necessary to keep the soil in shape for bounteous corn yields.
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