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| 1 | 球头铣刀刀刃形状对高速铣削加工的影响显示文摘使用精密球头铣刀进行高速铣削加工可以加工出各种形状的曲面,因而在模具生产及单件零件生产中得到了广泛的应用。球头铣刀高速铣削加工的切屑形成过程有它的特殊性。因而适当选择加工参数来调整最小切削厚度可以获得更好的铣削过程。 | 雷彬 Reso Alijew | 2002 | 机械制造2002，40，4： | 2 |
| 2 | Environmental and economic costs of soil erosion and conservation benefits显示文摘 | Pim entel D Harvey C Resos udar mo P | 1995 | Science1995，267，： | 1 |
| 3 | Outcome of laparoscopic splenectomy with preoperative splenic artery embolization for mas- sive splenomagal显示文摘 | Reso A Brar MS Church N | 2010 | Surg Endosc2010，24，8： | 1 |
| 4 | Outcome of laparoscopic splenectomy with preoperative splenic artery embolization for massive splenomegaly显示文摘 | Reso A Brar MS Church N | 2010 | Surg Endosc2010，24，8： | 1 |
| 5 | Outcome of laparoscopic splenectomy with preopera- tive splenic artery embolization for massive splenomegaly 显示文摘 | Reso A Brar MS | 2010 | Surg En- dosc2010，24，8： | 1 |
| 6 | Outcome of laparoscopic splenectomy with preoperative splenic artery embolization for massive splenomegaly 显示文摘 | Reso A Brar MS Church N | 2010 | Surg Endosc2010，24，8： | 1 |
| 7 | On-line determination of organophosphoms pesticides in water by solid-phase microextmction and gas chromatography with therrnionic-selective detection 显示文摘 | LopezAvila V Young R Beckert W F High Reso J | 1997 | Chromategr1997，20，： | 1 |
| 8 | Outcome of laparoscopic splenectomy with preoperative splenic artery embolization for massive splenomegaly显示文摘 | Reso A Brar MS Church N | 2010 | Surg Endosc2010，24，8： | 1 |
| 9 | Outcome of laparoscopic splenectomy with preoperative splenic artery embolization for massive splenomegaly显示文摘 | Artan Reso Mantaj Singh Brar Neal Church Philip Mitchell Elijah Dixon Estifanos Debru | 2010 | Surgical Endoscopy2010，，8： | 1 |
| 10 | Outcome of laparoscopic splenectomy with preoperative splenic artery embolization for massive splenomegaly显示文摘 | Reso A Brar MS Church N | 2010 | Surg Endosc2010，24，： | 1 |
| 11 | The effect of endotoxinon canine jejunal motility and transit 显示文摘 | Cullen J J Carop reso DK Ephgravek S | 1997 | J Surg Res1997，67，1： | 1 |
| 12 | Outcome of laparoscopic splenectomy with preoperative splenic artery embolization for massive splenomegaly 显示文摘 | Reso A Brat MS Church N | 2010 | Surg Endosc2010，24，8： | 1 |
| 13 | Outcome of laparoscopic splenectomy with preoperative splenic artery embolization for massive splenome-galy显示文摘 | Reso A Rar M Church N | 2010 | Surg Endoscopy2010，24，8： | 1 |
| 14 | Nitrogen export by runoff and sedimentunder different types of land use inWest Tiaoxi catchment显示文摘Five typical land covers in West Tiaoxi catchment of China, including mulberry garden, bamboo forest, pinery, vegetable plot and paddy field, were studied on nitrogen loss in artificial rainstorm runoff and sediment. Triple duplication experiments have been carried out under the artificial rain condition with an intensity of 2 mm.min-1 and lasting 32 minutes in 3 m2 field. Export of various species of nitrogen in runoff and sediment were investigated. The results show that nitrogen loss amount and rate are quite different among five kinds of land covers. The loss of total nitrogen in runoff of mulberry is the largest and that of paddy field is the smallest. Particle nitrogen accounts for 70-90% of total nitrogen in runoff of various kinds of land covers. Loss of dissolved nitrogen in pinery is much higher than in other kinds of land covers, which are similar among them. More detailed species of dissolved nitrogen show their respective features among various land covers. Total amounts of nitrogen loss from the top 10 cm layer of 5 kinds of soils are estimated as high as 4.66-9.40 g.m-2, of which nitrogen loss through sediment of runoff accounts for more than 90%. The rate of total nitrogen losses are ranged in 2.68-14.48 mg.m-2.min-1 in runoff, which is much lower than that of 100.01-172.67 mg.m-2.min-1 in sediment of runoff. | LIANG Tao1, ZHANG Xiumei1, ZHANG Shen1, YU Xingxiu2, WANG Hao3(1. Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China 2. Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, China 3. Institute of Reso | 2002 | Journal of Geographical Sciences2002，12，4： | 0 |
| 15 | Infrared and MAS NMR Spectroscopic Studies of Al_(18)B_4O_(33)显示文摘The IR spectrum and 11B and 27Al MAS NMR spectra of Al18B4O33 are presented and discussed in relation to the possible existence of boron atoms substituting for aluminum atoms. The IR spectrum shows that the strong vibrations of the BO3 groups are present in the 1 500-1 200 cm-1 region, and very weak bands of BO4 units are present in the region from 1 000 to 1 100 cm-1. 11B MAS NMR spectrum indicates that the strong signal for BO3 units appears in the region from δ+5 to δ+20, and the very weak signal for BO4 units is at about δ- 1, while 27Al MAS NMR spectrum shows five peaks at about δ+62, +42. 1, +14, -4. 7 and -6. 4, originating from AlO4, AlO4, AlO5, AlO6 and AlO6, respectively. These results reveal that there are minor BO4 units in Al18B4O33, indicating that a small amount of B atoms substitute for Al atoms in the 4-fold coordination. | YOU Hong-peng, HONG Guang-yan and ZENG Xiao-qing (Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China) DENG Feeng and YE Zhao-hui (Laboratory of Magnetic Reso | 2000 | Chemical Research in Chinese Universities2000，16，4： | 0 |
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