1.
Status of Aeolian-Sand Disaster and Estimation of Mechanical Sand-Controlling Benefit at Typical Sections of Qinghai-Tibet Railway
青藏铁路典型路段风沙灾害现状与机械防沙效益估算
2.
Study on Efficiency of Wind-erosion Control of the Mechanical Sand-barriers at the Qinghai-Tibet Railway;
青藏铁路机械沙障风蚀防治效益研究
3.
Study on Effects and Mechanism of the Integrated Controlling Sand Hazard to Highway in Otindag Sandy Land
浑善达克沙地公路沙害综合防治机理与效益研究
4.
Analysis on Preserving Benefit of the Sand-fixation Belt of Highway in Otindag Sandy Land
浑善达克沙地公路固沙带防沙效益分析
5.
Effects of Farmland Shelterbelts in Controlling Wind and Sand in Sandy Land of Yanchi
宁夏盐池沙地农田防护林的防风阻沙效益
6.
Effect Analysis of Application of Drip Irrigation in Sandstorm Land Protective Forest
风沙地防护林滴灌技术应用效益分析
7.
Desertification Calamity Economic Evaluation and Desertification Combating Engneering Profit Evaluation;
荒漠化灾害经济损失及防沙治沙工程效益评估
8.
Rules of Wind Prevention and Sand Resistance and Defensive Efficiency of Oasis Farmland Shelterbelt in Wulanbuhe Desert
乌兰布和沙漠绿洲农田防护林防风阻沙规律及防护效益
9.
A study on effectiveness of antirust and cost-effectiveness of two different kinds of instrument lubricants
两种器械润滑剂的防锈效果及成本效益研究
10.
Economic benefits of flood control project system in west of Shahe River and Luohe River
沙河、漯河以西防洪工程体系防洪经济效益分析
11.
The mechanical advantage of the machine is: (600N/150)=4.
机器的机械效益是：（600牛顿÷150牛顿）＝4。
12.
Study on comprehensive protecting efficiency of sand-bag obstacle of highway in Otindag Sandy Land
浑善达克沙地高速公路沙袋沙障的综合防护效益研究
13.
STUDY ON THE REDUCING WINDSPEED,STABILIZING SAND AND YIELD-GROWING EFFECTS OF SMALL NETWORT FARM-SHELTER FOREST IN SANDY AREA OF THE YELLOW RIVER
黄泛沙地小网格农田防护林网防风固沙和增产效益的研究
14.
Analysis of Economic Effect and Economic Life of Port Machinery
港口机械的经济效益及经济寿命分析
15.
Taking Economic Efficient Benefit as Central Task to Intensify Mechanical Management of Enterprise;
以经济效益为中心强化企业机械管理
16.
To improve use benefit about construction machinery;
科学管理 提高工程机械使用效益
17.
Investigation on Eco economic Benefit of Protection Forest in Rangland in Yulin Sand Zone
榆林风沙区牧场防护林生态经济效益调查
18.
Method for Forecasting Service Benefit on Flood Prevention of Shali River Basin
沙澧河流域防汛气象预报服务效益评估方法