Results 61 to 70 of about 42,727 (116)
, 2007 具有生态补偿意义的生态工程相继启动后,西藏的生态补偿工作得到了有效促进,但仍然存在一些不足。本文从国家对西藏生态补偿的资金投入、西藏采伐限额政策和生态服务价值等几个方面分析了西藏生态补偿中存在的问题 ...
普琼, 刘德晶, 白凤来, 王景升
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[Rapid determination of 12 photoinitiator residues in medicinal composite membranes by ultra performance convergence chromatography-tandem mass spectrometry]. [PDF]
Se PuCao YJ +7 more
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, 2019 本实用新型属于水下机器人领域，具体地说是一种ARV光纤补偿器收放装置，包括安装架、摆臂液压缸、摆动臂、伸缩臂油缸、伸缩臂及滑轮装置，安装架固定在船甲板上，摆臂液压缸及摆动臂的一端分别铰接于安装架上，摆臂液压缸的另一端与摆动臂铰接，伸缩臂可相对滑动地与摆动臂的另一端插接，伸缩臂油缸的一端铰接于摆动臂上，另一端与伸缩臂铰接；伸缩臂上转动连接有滑轮装置，光纤补偿器绞车固定在安装架上，光电复合缆的一端缠绕在光纤补偿器绞车上，另一端由滑轮装置绕过后与待收放的光纤补偿器相连。本实用新型拥有回收及布放两种形态 ...
孙海舰, 何震, 何立岩, 唐元贵
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[A case of neonatal fatty acid oxidation disorder]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiDeng LL +4 more
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[Chronic hepatitis B virus infection-related osteoporosis]. [PDF]
Zhonghua Gan Zang Bing Za Zhi, 2023 Zhang JY, Tang YM.
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[Medical treatment standards for emergency burn wounded (2025 edition)]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiNational Health Commission Of The People's Republic Of China.
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[Guidelines on the management of ascites in cirrhosis (2023 version)]. [PDF]
Zhonghua Gan Zang Bing Za Zhi, 2023 Chinese Society of Hepatology +1 more
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[Occurrence status and treatment strategies of abnormal growth and development in children with methylmalonic acidemia]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiWei HY, Li DX.
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, 1995 报道了用MBE生长轻掺Si高迁移率GaAs材料的杂质补偿特性实验研究。已得到77K温度下迁移率为16.2×10~4cm~2/(V·s)的GaAs材料。样品的Hall测量结果表明:在较低的杂质浓度范围(1×10~(13)cm~(-3)＜n＜1×10~(15)cm~(-3))内,在大体相同的生长温度(590℃左右)下,选择适当的生长速率Gr会增强对浅受主杂质的抑制作用,同时也会一致Si的自补偿效应,减小杂质的补偿度N_a/N_d之值 ...
周增圻 +3 more
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[Advances in the application of exhaled breath analysis technology in the detection and diagnosis of liver failure]. [PDF]
Zhonghua Gan Zang Bing Za ZhiZhang ST, Liu YS, He YL.
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