查询词典 directed line segment

When changing the flexible segment -- hydroxyl polyether's type and its molecular weight, and rigid segment -- aromatic isocyanic acid ester's type and function, solid's intensity, the heat resistance, the compressive strength and other performance will also vary.

改变氰凝预聚体结构中的柔性链段——端羟基聚醚的种类和分子量，或调节刚性链段——芳香族异氰酸酯的种类和官能度时，对固结体的强度、耐温性、抗压强度和其它性能可以进行控制。

The prepared PU was an elastic solid,which could dissolved in ethanol,and it exhibited strong deep purple fluorescence at the peak of 365 nm along with a shoulder at 386 nm as a thin film. Obviously,the prepared PU also was a kind of uncommon ultraviolet-emitting polymer materials.2.A novel water-soluble rod-coil block copolymer was designed and prepared successfully via the facile isocyanic acid polycondensation method using polyfluorene as rod segment and polyethylene glycol as coil segment in the main chain for the first time.

所制备的聚氨酯是一种弹性固体，可以溶解在乙醇中，同时又显示出具有半导体性质的荧光性能——最大荧光发射峰在365 nm并且在386 nm处有一个小的侧肩峰，可见它又是一种非常难得的紫外发光聚合物材料。2、首次采用了简单的异氰酸酯反应，成功地将聚芴作为刚性链段和聚乙二醇作为柔性链段，以嵌段方式连结到聚合物分子主链上，从而形成了一种新型的具有刚性链—柔性链结构的嵌段共聚物。

With higher content of β-carotene. The length and width of perianth segment(inner 2 ring) were osculant, the former showed matroclinous inheritance, the latter showed patroclinal inheritance, so Liriodendron interspecific hybrids with bigger perianth segment could be selected by Liriodendron chinense?

杂交鹅掌楸内两轮花被片长度和宽度为双亲中间型，分别偏向母本和父本，用内两轮花被片较宽的鹅掌楸作母本，内两轮花被片较长的北美鹅掌楸作父本，有望选育出大花的杂交鹅掌楸个体。

In order to get the features of correlation dimension of microseismic signal,correlation dimensions of noise segment and microseismic pulse segment of the original signals are calculated.

为了得到微地震信号的关联维特征，计算了原始信号中噪声段和微地震脉冲段的关联维。

The preoperatie symptoms before ACDF were myelopathic symptoms in 24 patients, nonmyelopathic symptoms in fie patients, and unknown in two patients. The adjacent lesions were spondylosis in 27 patients and disc herniation in four patients, and they occurred in the superior segment in 21 patients and in the inferior segment in 10 patients. Thirty-one age- and sex-matched patients with cerical spondylotic myelopathy who underwent ELAP during the same period, who gae no history of surgery on the cerical spine, were enrolled as controls (group B; 26 males, fie females; mean age: 58 years).

ACDF术前24例患者有脊髓病症状，5例为非脊髓病症状，2例患者为不名症状。27例和4例患者相邻节段损害分别是颈椎病和椎间盘突出，并且21例患者发生在上位节段10例在下位节段，31例年龄和性别相符患有脊髓型颈椎病而又没有脊柱手术史的患者在同一时期行ELAP者被计入对照组（B组：26例男性，5例女性；平均年龄58岁）。

The relationship between PE segment and speech skill, the influence of surgical technique on PE segment and the mechanism of the prevertebral buldging were discussed.

本文就咽食管段的形态与发音技能关系、手术对咽食管段形态的影响和椎前隆起的机制进行了讨论。

Repeaters receive signals from one network segment and amplify, retime, and retransmit those signals to another network segment.

重读接收讯号从一个网段和健全， retime ，这些信号转发到另一网路区段。

In addition, the location of the apical vertebrae in the scoliotic segment, as usually identified in the coronal plane, may not be the same as that identified in the kyphotic segment when viewed in the sagittal plane.

因此并非所有的Lenke-1型胸弯都是后凸不足，另外，通常由冠状面确定的侧凸节段的顶椎位置和矢状面上后凸节段的确定并非相符。

The heat-conduction working fluid ring vacity glass pipe besiding the glass sealing ring wiped joint separatrix is exothermic segment,the inner part is heat-collecting segment.

玻璃密封环形焊接点分界线外的导热工质环腔玻璃管为放热段，内为集热段。

To minimize complications from urine reservoir constructed with an intestinal segment,reticular transplantation of bladder mucosa to an intestinal seromuscular segment was conducted in 3 randomized groups of canines.

为减少肠管膀胱术的并发症，于1994年3～7月，用犬分三组作了膀胱粘膜点状移植于浆肌层肠段重建膀胱的实验。A组：自体膀胱粘膜点状移植于浆肌层肠段形成人工膀胱，B组：在A组基础上一期将输尿管与人工膀胱吻合，C组：将同种异体膀胱粘膜移植于浆肌层肠段。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。