Land is one of unrenewable quasi-public products, whose supply is always less than demand.

As an unrenewable resource, farming land has to be made highly efficient use of.

农地是不可再生资源，必须进行有效的利用。

The Species Component and Distribution of Passerine birds Communities of Yunmeng Mountain Forest Park in Beijing

北京云蒙山森林公园雀形目鸟类的组成和分布

A comparative study on thermoregulation of three species passerine nestling in alpine meadow

高寒草甸三种雀形目雏鸟热调节机制的比较研究

Breeding Ecology of Passerine Birds in Alpine Meadows of Northern Qinghai

青海北部高寒草甸雀形目鸟类繁殖生态学的研究进展

Correlation between Basal Metabolic Rate and Organ Masses among Four Passerine Birds in Wenzhou, Zhejiang Province

温州地区4种雀形目鸟类基础代谢率与器官重量的相关性分析

Effects on Nestling Growth by Brood Manipulation in Two Passerine Birds

窝雏数处理对两种雀形目幼鸟生长的影响

The combination of these conditions provides an ideal refuge, especially for passerine migrants in early spring.

这些条件结合在一起提供了理想的避难所，对于早春迁徙到此的雀形目鸟类尤其如此。

The quantitative analysis of reproductive pattern of passerine birds in alpine meadow

高寒草甸雀形目鸟类繁殖方式的定量分析

Research on Current Tails of Non-conducting Winding in Doubly Salient Motor

双凸极电机非导通相电流尾巴的研究

Research on Current Tails of Non-conducting Winding Brushless DC Motor

无刷直流电动机非导通相电流拖尾的研究

Compensation and Correction of Elemental X-Ray Analysis of Non-Conducting Materials

非导电材料元素X-射线显微分析的补偿和校正方法

Research Progress on Non-Conducting Polymer/ Carbon Nanotubes Functional Composites

非导电聚合物/碳纳米管功能复合材料研究进展

In this study, with the combination of electrochemistry and heterogeneous catalysis in the bipolar packed bed cell, the electric nonconducting particle was replaced by catalyst and heterogeneous catalytic reactions occurred in an electrochemical reactor.

本文将电化学与多相催化有机结合起来，以复极固定床电解槽（BPBC）为反应器，用负载金属氧化物的多相催化剂取代传统反应器的绝缘填料，构建了多相催化电解耦合体系。

Safety Needs All Webs ′ Watch THE MESH The Monitoring for Nonconducting Between Electric Fence and Grand

安全需要全网监控

The development of compound ECM/ EDM pulse generator of machining nonconducting superabrasives

非导电超硬材料电解电火花复合加工脉冲电源的研制

The equipment may measure conducting or nonconducting surface roughness of a body with accuracy of nanometer level.

它可以测量导体或非导体表面纳米级精确度的粗糙度。

Variable Frequency Adjusting Speed Circuit Design for Spindle Motor of EDG Nonconducting Superabrasives

非导电超硬材料电火花磨削主轴电机变频调速电路的设计

In this book, two women are supposed to be attractive with their virtues, composedness when suffering from pain and sadness, and of course with their beauty in soul.

在这本书中，两名妇女都应该与他们的美德，沉着的痛苦和悲伤时，从痛苦的吸引力，当然与他们的心灵美。

A regular yoga practice can help consolidate friendship, increase compassion and improve your extent of composedness.

一项常规的瑜伽练习，能够帮助加深友谊，增加同情心，以及提高你的镇静程度。

A soda of reduced overall sugar consumption. In most forms the tax is designed to discourage the production, importation and purchase of carbonated, uncarbonated, sports and energy drinks, with excess levels of added sugar.

在大多数情况下，“糖税”用来减少含糖量较高的碳酸饮料、非碳酸饮料、和运动能量型饮料的生产、进口及购买。