根

The compound is an ionic compound consisting of a cation NH(subscript 4 superscript +) and an anion C6H2N3O(subscript 9 superscript -), and it is the mono-substituted salt of TNPG. Since the existence of complicated hydrogen bond networks and electrostatic attraction between NH(subscript 4 superscript +) cation and C6H2N3O(subscript 9 superscript -) canion, the compound possesses better stability and low sensitivity.

该化合物是由一个铵根离子与一个一价的三硝基均苯三酚负离子相结合而形成的离子型化合物，分子中存在的大量氢键及铵根离子与三硝基均苯三酚负离子之间的静电引力使得该化合物具有较高的热稳定性和较低的感度。

It is located just behind the zone of elongation and is the main absorptive area of the root.

该区域位于根的伸长区之后，是根的主要吸收区域。

Different sacral nerve roots have different dominative effects to bladder smooth muscle. It is meaningful for patients of spinal cord injury to improve their urination function by performing artificially electric stimulation for emiction through the main nerve roots controlling of bladder or rebuilding artificial bladder reflex arc by neurorrhaphy

不同的骶神经根对膀胱平滑肌的支配效能不同，利用膀胱平滑肌的主要支配神经根进行人工电刺激排尿或通过神经吻合重建人工膀胱反射弧，对提高脊髓损伤患者的膀胱排尿功能有一定的意义。

Each end has to be controlled, therefore one tension device per end is needed.

每根纱线都应单独控制，因此每根纱线都需要一个张力装置。

Sonic endo system may greatly improve the efficiency of endodontic clinic work.

声波根管器械临床应用可能提高根管预备的工作效率。

Epidermis, cortex, endodermis, stale can be observed from the surface of a root to the center.

从根的横切面从外向根内观察，可分为表皮、皮层、内皮层和中柱这4个部分

Mechanical instrumentation of the root canal is an important part of endodontic treatment.

根管预备是根管治疗成败的关键性环节。

A number of studies attempted to assess the technique quality and outcome of endodontic treatment.

根管充填质量是影响根管治疗疗效的重要因素之一。

Clinical analysis of 75 cases fractured endodontic instruments in root canal treatment.

根管治疗是治疗各种不可复性牙髓炎及根尖周炎的最可靠的有效方法。

Objective To determine the influence of the microbial flora isolated from failed endodontic tooth to dogs' apical tissue.

目的 观察根管治疗失败病例根管内分离的主要微生物对狗牙根尖周组织的影响。

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。