间作

You can choose between A and B.

你可以在A和B之间作一个选择。

The velocity,acceleration and time of a particle sliding down along a horizontally free concave surface are discussed.

对于一个质点从可自由移动的光滑的凹曲面上滑下的速度、加速度和时间作了一般性讨论，建立了相应的公式。

The results showed that the difference and regularity of changes in species richness, diversity and evenness of arthropod community at different time were obvious.

结果表明，间作苜蓿棉田节肢动物群落的物种丰富度、多样性和均匀性指数在时间过程中的变化有明显的差异性和规律性。

The main factors and temporal patterns which influenced arthropod community in the course of time change divided obviously.

在时间变化过程中，影响节肢动物群落的主导因素和时间格局分化明显，将间作苜蓿棉田节肢动物群落在时间动态中的变化分为5个阶段，并结合气候、物候变化，分析了各阶段内主要害虫和天敌的发生特点。

At last the suggestion of pay more attention to the relationship of mineral nutrients and pests and diseases control in intercropping system in future study was advanced.

同时阐述了矿质营养与病虫害发生的关系，并针对目前间套作系统中养分与病虫害关系研究的空白，提出今后的研究应加强间作系统中养分与病虫害控制方面的研究。

In the breathing spell of the vacation he had taken, he had spent many hours in self- analysis, and thereby learned much of himself.

在他所度过的短短假期里，马丁花了许多时间作自我分析，对自己了解了许多。

The increased yield of the intercrops might be attributed to the improved nitrogen and phosphorus nutrition of soybean and maize under intercropping conditions.

我们的研究结果初步阐明了间作作物之间的营养互作机理，可为农业生产中间作系统的栽培管理提供理论依据。

There was an interaction between maize and intercrops in Cd uptake. Legumes absorbed smaller amount of Cd but significantly increased the Cd uptake by maize, while amaranth was in adverse. Rape had a higher level of Cd concentration in its shoot, but reduced the Cd in aboveground part of maize.

间作植物与玉米对Cd的吸收具有不同的交互作用特征，豆科作物在自身较少吸收Cd的条件下，显著提高了玉米对Cd的积累；籽粒苋在自身大量累积Cd的同时，一定程度上抑制了与其间作的玉米的Cd累积量；油菜地上部分吸收较多的Cd，但降低了玉米地上部分Cd含量。

Result With young elm forest-pumpkin strip intercropping, since the branch tendril covered the gap between pumpkin planting-ditches and elm forest land, the soil moisture was remarkably increased. And the water use efficiency under intercropping increased by 23.7%-163.3% compared with the sole cropping. Elm-pumpkin strip intercropping changed the sequential succession trend of the grasses growing in the gap of the pumpkin planting-ditch, annual grasses became the dominant vegetation, and the feeding nutrient matter content and yield of the annual grasses increased significantly.

榆树幼林与南瓜间作后，瓜蔓覆盖地面，显著提高了南瓜行间和榆树林地的土壤水分含量，林－瓜间作地水分的利用效率较单作提高了23.7%~163.3%；间作改变了南瓜行间杂草群落自然演替的方向，一年生杂草成为优势物种，其饲用营养物质的含量和产量较林带间杂草显著提高。

And its increase rate amounted to17%in comparison with single -cropping patterns gained from yield indexes reflect the relative number of luminous energy achieved by corn and soybean at their growth stages,and it is one ofscientific basis for the appraising the a...

根据产量指数比较所获得的各间作比例的6种光合份额值，反映了玉米和大豆在生育期分别获得的光能相对数量，是评价不同间作比例的玉米及大豆实际单产的科学依据之一。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。