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We proposed a set of tabulate shim coils to improve the imaging field homogeneity for permanent magnet. By studying the magnetic spherical harmonics and its Taylor expansion, the proposal of designing lower-order radial coils was derived including x, y, xz, xz~2, x~2-y~2 etc. In addition, a novel composite design was presented for the axial coils. By controlling the shim currents of axial coils, different axial magnetic fields can be obtained. This method simplified the design process of axial coils, and made the axial correcting magnetic field more precise.

本文针对永磁体的组成结构提出了一种平板式匀场线圈设计方法，通过研究成像磁场的球谐函数以及通电圆弧在自由空间产生磁场的泰勒展开级数，导出了x、y、xz、xz~2、x~2-y~2等低阶径向线圈的设计方法，同时针对轴向线圈提出了一种新的混合式设计方案，能够通过控制线圈中的电流组合实现对不同轴向磁场分量的获取，简化了轴向线圈的设计过程，提高了校正磁场的准确性。

The effect of three substratum in four weight levels on yield and quality of Stropharia rugoso-annuata was studied.

本试验研究了3种栽培料在4种重量水平下对大球盖菇产量和品质的影响。

A Basque or Spanish game played in a court with a ball and a wickerwork racket .

一种巴斯克人或西班牙人的一种游戏用一个球和一个树枝编的拍子在一个场地进行。

A squash racket, ball, court, gamea Basque or Spanish game played in a court with a ball and a wickerwork racket .

一种巴斯克人或西班牙人的一种游戏用一个球和一个树枝编的拍子在一个场地进行。

The major results obtained are: PCR-RFLP method is suitable for molecular identification of Shihu; 205 compounds were isolated from 10 species of Dendrobium, including 21 new compounds, and 28 compounds isolated from genus Dendrobium for the first time. Each of the extracts and compounds were screened for anticoagulant and antitumour activities separately. The results indicated that the ethyl acetate extract from Dendrobium chrysanthun has significant anticoagulant function; the antitumour function of the 4 bibenzyl components from Dendrobium chrysotoxum is stronger than that of phenanthrene, of which the erianin has significant anti-angiogenic effect both in vivo and in vitro; components with moderate or stronger antitumour activities were found in the extracts of D. thyrsiflorum, D. chrysanthun and D. trigonopus; quality standard for 5 species of Dendrobium was drawn up use active or indicative components as control.

重要研究结果有：经方法学研究，认为PCR-RFLP法适于作为石斛属药材分子标记鉴定方法；对10种石斛进行化学成分分离鉴定，共分得205个化合物，其中新化合物21个，首次从石斛属分得的28个；对提取物和各单体化合物分别作抗凝血、抗肿瘤等活性筛选，结果说明束花石斛乙酸乙酯部位有显著的抗凝血作用，鼓槌石斛的4个联苄类成分抗肿瘤作用强于菲类，联苄类毛兰素在体内外有显著抗血管生成活性，球花石斛、束花石斛及翅梗石斛均筛到中等或较强抗癌活性的成分；选择有活性或指标性成分作对照品，对5种石斛草拟了质量标准。

Secondary production of major groups of macrozoobenthos in Lake Donghu was estimated from field data. The number of generaion, P/B coefficients and production of 9 dominant species were as follows: B. aeruginosa, univoltine, 91. 56g WW/m〓. yr, 0.64; S. lacustre, univoltine, 43. 02g WW/m〓. yr, 3. 55; B. sowerbyi, univoltine, 11. 39g WW/m〓. yr, 4. 15; L. hoffmesteri, trivoltine, 7. 09 g WW/m〓. yr, 11. 9; P. choreus, bivoltine, 5. 03g WW/m〓. yr, 10.33; Ch. plumosus, bivoltine, 3. 37g WW/m〓. yr, 9. 10; T. chinensis, univoltine, 3. 76g WW/m〓. yr, 4. 49; T. akamusi, univoltine, 44. 60g WW/m〓. yr, 4. 60; Clinotanypus sugiyamai, univoltine, 0.48g WW/m〓.

较系统地研究了东湖底栖动物九种优势种的生活史、P／B系数和生产量，其结果如下：铜锈环棱螺：一年一代，生产量为91.56g WW／m〓。yr，P／B系数0.64；湖球蚬：一年一代，43.02g WW／m〓。yr，3.55；苏氏尾鳃蚓：一年一代，11.39g WW／m〓。yr，4.15；霍甫水丝蚓：一年三代，7.09 g WW／m〓。yr，11.9；花翅前突摇蚊：一年两代，5.03g WW／m〓。yr，10.33；羽摇蚊：一年二代，3.37g WW／m〓。yr，9.10；中国长足摇蚊：一年一代，3.76g WW／m〓。yr，4.49；大红德永摇蚊：一年一代，44.60gWW／m〓。yr，4.60；褐斑菱跗摇蚊：一年一代，0.48g WW／m〓。yr，7.59。

The studies started with the traditional taxonomy of Collembola, emphasized to reveiew several Chinese familiar groups in soil such as Hypogastruridae and Neanuridae based on their external morphological characters, reported new species and new record species to China, and made a checklist of all the reported Chinese species.

本研究从弹尾纲的形态分类入手，在掌握弹尾纲各个类群主要的外部形态分类特征基础上，着重整理、鉴定了国内弹尾纲的球角科、疣科等土壤内常见类群，补充报道了中国新种和新记录种，整理了国内已知跳虫的名录。

Two kinds of ball cactus ( Ferocactus horridus and Echinopsis calochlora ) were grown in a still hydroponics with four formulae together with a peatmoss medium as control to study the adaptability of those plants to nutrient solution culture.

选用4 种营养液配方栽培巨鹫玉和金盛球两种仙人球，以泥炭/河沙混合基质栽培为对照。

According to Hydrophile and Lipophile Balance, the suitable surfactants have been selected and put into lubricating oil with single nanometer particles or two kinds of nano-materials, The tribology tests were carried out in four-ball tribotester.

介绍了纳米材料的制备，根据亲水亲油平衡值选择了合适的表面活性剂，并将其加入到含有单种或两种复合纳米粒子的润滑油中进行表面改性，采用四球摩擦磨损试验机测定含纳米粒子的润滑油的摩擦学性能。

Liliaceae Lilium Lilium bulbs of flowers, the world's more than about 920, about 46 kinds of China, accounting for 51 percent of the total number of the world.

百合为百合科百合属的球根花卉，世界上约有920余种，我国约有46种，占世界总数的51%。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。