论文部分内容阅读
意识一瞥国外环保
【出 处】
:
世界环境
【发表日期】
:
2004年03期
其他文献
Intracranial squamous cell carcinoma developing in remnant of an epidermoid cyst:case report and lit
Epidermoid tumors, sometimes called pearly tumor, because of the appearance of their outer surface, represent about 0.2%-1.8% of all the primary intracranial t
生丝颣节已成为自动缫生丝特别是较粗规格生丝提高质量的主要障碍,因此提高清洁、洁净成绩是自动缫生产中迫切需要解决的问题.文章分析了生丝节在品位定级上的作用,并提出
Diagnosis and treatment of trigeminal schwannomas extending into both the middle and posterior crani
Trigeminalschwannomas(TSs)accountfor01%-04%ofallintracranialtumorsand1%-8%ofintracranialschwannomas1,2 YoshidaandKawase3classifiedTSsinto6typesaccordingtotheir
从实验上研究了光电导天线电极之间激光光斑大小对太赫兹波产生的影响。另外,理论模拟了激光功率密度与太赫兹波辐射强度之间的关系,与实验结果非常吻合。泵浦光激光功率密度的
Short segmental pedicle screw fixation combined with percutaneous vertebroplasty in treatment of non
To evaluate the short-term outcomes of short segmental pedicle screw fixation combined with per-cutaneous vertebroplasty in treatment of nonadjacent tho-racolum
番禺南沙,80只夜鹭翩翩翱翔rn滩涂熟了,向蔚蓝的海洋伸展.3年左右,填成一围,番禺南沙新垦十九涌海岸线最远延伸2.85公里.番禺新垦镇十八涌以南的部分区域是广州现存仅有的一
通过对飞宇2000型自动缫丝机及与D301B型自动缫丝机使用的对比,列举了飞宇2000型的性能优势,尤其是车头的先进性能.在对车头进行省力化探索过程中,一人管理两个车头取得成功.
Late-onset primary hyperoxaluria type 1 in a Chinese individual with absent alanine:glyoxylate amino
Nephrolithiasis is a common clinical problem, and its cause is often classified as idiopathic. Primary hyperoxaluria, mostly type 1, constitutes one of the rar
应用Z-扫描技术对比研究了萘酞菁铅和萘酞菁钯化合物在波长为532 nm纳秒激光脉冲作用下的三阶非线光学特性。实验结果表明,两种萘酞菁化合物均显现出较强的非线性吸收特性(反