查询词典 3-D

A series of crosslinked sulfonated polys were synthesized from 4,4'-difluorodiphenyl sulfone, 4,4'-biphenol, 3,3'-disulfonate-4,4'-difluorodiphenyl sulfone and 1,3,5-trihydroxy benzene by nucleophilic substitution polycondensation reactions. The trifunctional crosslinker of THB was in the mass fraction range of 3%-7%.

以4，4'-二氟二苯砜、4，4'-联苯二酚、3，3'-二磺化－4，4'-二氟二苯砜二钠盐和三羟基苯为原料，经高温溶液缩聚反应，制备了一系列不同磺化度的新型交联磺化聚芳醚砜。

Sulfonated poly are prepared by direct polymerization of biphenol A, disodium 4, 4"-difluoro-3, 3"-disulfonate-1, 1-diphenylsulfone and 1, 3-(4-difluorophenyl)benzene. The polymers are characterized with ~1H-NMR, FT-IR.

以双酚A，1，3-二(4-氟苯基)苯和4，4′-二氟-3，3′-二磺酸钠-1，1′-二苯砜采用直接缩合法合成了不同磺化度的磺酸型聚芳醚酮砜，通过FT-IR和~1H-NMR对聚合物进行了表征，证明其结构正确。

Mm. Male flowers: pedicels filamentous, 3-5 mm; calyx red or purple; sepals 6, biseriate, subequal, obovate, 2-3 × ca. 1.5 mm; disk segments 6, opposite sepals; stamens 3; filaments connate into a short cylinder.

雄花：花梗丝状，3-5毫米；花萼红色的或紫色；萼片6，2列，近等长，倒卵形，2-3*约1.5毫米；花盘裂片6，与萼片对生；雄蕊3；进一个短汽缸合生的花丝。

Female flowers solitary or several and male mixed in axillary cluster; pedicels 2-6 cm; calyx yellow-green, 6-lobed; sepals slightly thick, biseriate, outer obovate or subspatulate, ovate-elliptic, 6-7 × 3-4 mm, inner shorter, obovate, ca. 5 mm, with purple stripes; disk absent; pistil depressed globose, ca. 2 × 2.7 mm, 3-locular; styles 3, bifid at apex, arms recurved.

雌花单生或数个雌花和雄花在腋生簇束里混生；花梗2-6厘米；花萼黄绿色，6裂；萼片稍厚， 2列，外部倒卵形或近匙形，卵状椭圆形， 6-7 * 3-4 毫米，内部的短，倒卵形，长约5毫米，有紫色条纹；花盘无；雌蕊扁球形，约2×2.7毫米，3室；花柱3，在先端2裂，裂片下弯。

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。

Dynamic gray scale sonography reealed a 3.7 x 3.8 x 3.5-cm round, well-defined, slightly hypoechoic, mildly heterogeneous mass with posterior acoustic enhancement immediately adjacent to the medial aspect of the brachialis muscle and just anterior to the medial epicondyle.

动态灰阶超声检查显示一3.7×3.8×3.5cm的圆形肿块，边界清晰，呈略低回声，轻微不均质，而且后方回声增强，肿块紧邻肱肌内侧，并位于内上髁的前面。

Fruit 3-10(-15)× 1-1.3 mm, widest near or at base; petals 1-2.5(-3) mm; seeds often subbiseriate at basal portion of fruit; racemes bracteate throughout or rarely only along proximal half

果 3-10(-15)* 1-1.3 毫米，宽近的或在基部；花瓣1-2.5(-3)毫米；在果的基部的部分的种子通常subbiseriate；只下半部的在整个或很少具苞片的总状花序 2 N。

Given the current complexity of industrial recovery of 3'-methyl-2'-butenyl 3, 3-dimethyl-pentenoate and the decomposition problems with 2-methyl-1-butene, research was conducted on a process for direct recycling of MBDP involving an ester exchange reaction of MBDP with either methanol, trimethyl orthoacetate, or solutions of methanol and trimethyl orthoacetate.

针对目前工业上回收3，3-二甲基－4-戊烯酸－3'-甲基－2'-丁烯酯工艺复杂、异戊烯大量分解问题，研究了MBDP直接返回循环使用工艺，MBDP与甲醇、原乙酸三甲酯或与甲醇原乙酸三甲酯混合溶液进行酯交换反应的回收新工艺，比较了四异丙基钛酸酯、甲醇钠、氢氧化钾用作酯交换催化剂的效果，筛选出回收MBDP&一锅煮&最佳工艺：按照n：n：n：n＝1.0：9.8：9.2：0.05物质的量比投料，74℃~78℃反应21h，MBDP转化为贲亭酸甲酯和异戊烯醇，单程转化率87.7%，用85%的磷酸中和甲醇钠，蒸出甲醇，直接用于合成贲亭酸甲酯。

Stamens 6, free, all or only 2 or 3 fertile; filaments glabrous or torulose villous; anthers parallel or slightly divergent, longitudinally dehiscent, rarely dehiscent by apical pores; staminodes 1--3; antherodes 4-lobed and butterflylike, 3-sect, 2-lobed and dumbbell-shaped, or entire.

雄蕊6，离生，全部或者只2-3个能育；花丝无毛或者有念珠状长柔毛；花药平行或者稍分叉，纵向开裂，很少顶孔开裂；退化雄蕊1-3；退化花药4裂成蝴蝶状，或3全裂，或2裂成哑铃形，或者全缘。

Their relative molecular weights were 4785 and 4386 respectively. And their absorbance peaks were 210.5 nm and 225.4 nm respectively. The bovine and caprine placental peptides could improve immunosuppressive T lymphocyte transformation rate. The immunosuppressive lymphocyte transformation rates in groups with the bovine placental peptide of 1:1×10^3 and 1:1×10^4 (P.05)and with the caprine placental peptides of 1:1×10^2, 1:1×10^3 and 1:1×10^4 (P.01 )increased more remarkably than that in immunosuppression group.

结果 从牛和羊胎盘中成功提取出了胎盘肽，其相对分子质量分别为4785和4386；其最大吸收峰分别为210.5和225.4nm；牛和羊胎盘肽均可使顺铂抑制的兔外周血T淋巴细胞的转化率显著提高，其中牛胎盘肽以1：l×10^3、1：l×10^4 2组吸收度明显高于抑制组(P.05)；羊胎盘肽以1：1×10^2、1：1×10^3和1：1×10^3 3组效果最为明显(P.01)。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。