【摘 要】
:
密云县林业局着力抓好五项措施确保绿化造林任务顺利完成。1.严格执行造林工程招投标制,召开春季造林工作会,从工程技术管理、施工管理、后期管护等方面
Miyun County Fores
论文部分内容阅读
密云县林业局着力抓好五项措施确保绿化造林任务顺利完成。1.严格执行造林工程招投标制,召开春季造林工作会,从工程技术管理、施工管理、后期管护等方面
Miyun County Forestry Bureau focus on five measures to ensure the successful completion of afforestation task. 1. Strict implementation of the afforestation project bidding system, held a spring afforestation workshop, from engineering and technical management, construction management, management and other aspects of the latter
其他文献
塞罕坝机械林场位于河北省围场满族蒙古族自治县北部坝上地区,海拔1010~1940米,属寒温性高原气候,冬季漫长寒冷,夏季凉爽短暂。塞罕坝机械林场于1962年由原国家林业部批复建场
作者对110例因各种肾上腺病变作肾上腺切除的病例作了回顾性复习,选择术前8周内CT确定了肾上腺病变的大小并有手术切除标本的92例进行研究。男33例,女59例,年龄15~83岁。肾上
Degradation behaviors of 20 V NLDMOS operated under off-state avalanche breakdown conditions are presented.A constant current pulse stressing test is applied to
This paper studies a small f-number metallic lens with depth-modulated slits.Slits filled with dielectric between silver plates are designed to produce desired
及时了解高血压患者特别是新诊断高血压患者的动脉状态,有助于对高血压的早期诊断、早期干预、早期治疗和早期防治并发症,意义重大[1,2]。动脉粥样硬化的发生与高血压密切相
动态敏感增强MRI(DSC-MRI)近来用于脑梗塞和脑肿瘤的早期发现和定性。大量对比剂通过血管内系统时将造成局部磁敏感效应而引起一过性信号下降,灌注期信号下降的程度与血中对
浙江省义乌市自2008年2月被建设部命名为“国家园林城市”以来,市委、市政府进一步把巩固和提高园林绿化水平作为贯彻落实科学发展观、转变经济增长方式、构建和谐社会的
Si
The method extracting the electromagnetic parameters from scattering coefficients was studied in this paper. The Support Vector Machine (SVM) method is used to
The energy band structure with type-I alignment at the PbTe/CdTe(111) heterojunction interface is determined by the ultraviolet photoelectron spectrum using syn
This paper reports that heat insulating property of infrared reflective coatings is obtained through the use of pigments which diffuse near-infrared thermal rad