1.
Mathematical Model for Measuring Macro-control Exploitation Amount of Protective Mineral;
保护性矿种宏观调控开采总量测算的数学模式
2.
(3) specified minerals of which protective mining is prescribed by the State;
（三）国家规定实行保护性开采的特定矿种；
3.
a protective cover that protects the face of a watch.
保护表面的一种保护性盖子。
4.
CHAPTER V PROTECTION OF COAL MINING AREAS
第五章 煤矿矿区保护
5.
This non-drying soap maintains protective lipids.
这种非干性肥皂用于保持保护性油脂。
6.
An overview on biodiversity and its protection in Maolan Nature Reservation
茂兰自然保护区生物物种多样性及其保护
7.
Introduction of Breeding Stock and Protection and Utilization of Genetic Resources of Sheep;
养羊业的引种和种性资源保护与利用
8.
Study on Ridge Tillage Treatments in the Ridge-zone
垄作区几种保护性耕作种植模式研究
9.
Research on Selectivity Leakage Protection Equipment for Coal Mine High Voltage Power Supply System;
矿井高压供电系统选择性漏电保护装置研究
10.
Performance Study for Roll over Protective Structures and Falling Object Protective Structures of Mining Dump Vehicle;
矿用自卸车翻车和落物保护装置性能研究
11.
Analysis on Significance and Benefit of Land-Reclamation Afforestation to Protection of Mining Area;
复垦造林对矿区保护的重要性及效益分析
12.
EFFECT OF IRRIGATION METHODS ON MINERALIZATION OF SOIL ORGANIC NITROGEN IN PROTECTED FIELD
灌溉方法对保护地土壤有机氮矿化特性的影响
13.
Research on Selective Leakage Protection for Mining Low-voltage Feed Switch
矿用低压馈电开关中选择性漏电保护的研究
14.
Coal Mine Low-voltage Power Supply Overcurrent Protection Device Performance Analysis
煤矿井下低压供电过流保护装置性能分析
15.
The selectivity leakage protective system of mine LV Distribution Network based on ZigBee wireless sensor network
基于ZigBee的矿井电网选择性漏电保护系统
16.
A New Mine Selective Earth Leakage Protection Device of low-voltage Distribution Networks
新型矿井低压电网选择性漏电保护装置研究
17.
Development and Protection : A Fundamental Rational Pattern;
发展与保护:一种原则性的理性模式
18.
Study on Species Diversity and Protection of Seed Plants in the Luanheshangyou Nature Reserve;
滦河上游自然保护区种子植物物种多样性及其保护研究