间距

Also design method of blasthole spacing in pre-splitting blasting is discussed, and the writers hold that primary fractures should be considered in process of hole-spacing design.

同时还讨论了预裂炮孔间距的设计方法，认为在炮孔间距设计时，应考虑原生裂缝的存在。

The available operation range in clivus and anterior cranial base by transsphenoidal opproach was also observed during the operation under the help of neuronavigational pointer. Forty-one patients underwent sublabial, transseptal, transsphenoidal approach to the pituitary region guided by Surgical Microscope Navigation was studied. The piriform aperture was 27. 2mm±3. 1 , the origin of inferior nasal concha 30mm±4. 1, the origin of middle nasal concha 27. 9mm±4. 3. These data are important for transsphenoidal approach, because the piriform aperture and the origin of both inferior and middle nasal conchas restricted the opening width of the Hardy specula. If any distance of these bony structures was much less than the mean one, may cause inadequate opening of the specula blade and resulting dissatisfied operative field. Microadenomas or cystic tumors perhaps can be operated even in a narrow exposure, but large or giant solid adenomas may need a proper evaluation including changing the operative approach or performing a bilateral submucous inferior conchotomy or posterior ethmoidectomy firstly.

手术中还利用CT导航系统观察棒研究了经口—鼻蝶窦入路在斜坡区和前颅底能够达到的实际有效操作范围，为扩大经蝶窦入路手术在斜坡区和前颅底的应用奠定基础，在国内外尚未见同类报道。41例垂体瘤患者梨状孔平均宽度27.2mm±3.1，下鼻甲根部附着处间距30mm±4.1，中鼻甲根部附着处间距27.9mm±4.3，这是经口—鼻蝶窦入路手术中，对Hardy双瓣鼻窥器张开限制的主要骨性结构，若患者这些径线值明显小于平均值，则可能因为鼻窥器打开不充分而影响手术暴露，当然对于垂体微腺瘤和以囊变为主的垂体瘤可能影响不大，但对于大和巨大垂体瘤必须要有充分的准备，包括评估是否改用其他入路，或先行鼻甲切除再行经蝶手术。

The maximum field on the right of ring junction decreases with the increase of ring spacing and lateral diffusible depth.

在场限环结构中，当主结和环结在表面处的最大电场强度均等于临界电场强度时，击穿电压达到最大值，此时所对应的环间距为最佳环间距。

Methods 43 cases of lumbar stenosis undergone domelike decompression were performed L(subscript 3~4) and L(subscript 4~5) CT scanning pre-and postoperatively.

对弯顶形椎管扩大成形术治疗的43例腰椎管狭窄症患者手术前后进行CT扫描，用Image-Pro软件对CT扫描片进行椎管L(下标 3~4)、L(下标 4~5)的椎管矢径、上关节突内缘间距、椎板间距、截面积测量分析。

Domelike decompression can increase APDC, IFD, ELD and CSAC significantly, especially for CSAC, which is an effective way for lumbar stenosis.

弯顶形椎管扩大成形术可明显扩大腰椎管的矢径、上关节突内缘间距、椎板间距和椎管截面积，尤其是椎管截面积扩大更为明显，是一种治疗腰椎管狭窄症有效的方法。

Results:Among the 38 cases,the affected sites were the femur (n=21),tibia (n=5),humerus (n=3) and other bones (n=9).37 cases had central calcified nidus,33 cases had sclerotic margin,13 had periosteal or endosteal bone formation.

材料与方法本组 38例中男 31例，女 7例，年龄 3～ 4 1岁，平均19 。4岁，其中 35例年龄在 2 5岁以下；所有病例采用2 。5～ 5 。0mm层厚/层间距的CT扫描，其中 10例采用3mm层厚/层间距扫描、1mm重建。

They spread horizontally and equidistantly over a large of 150km2 in urban and suburb districts.

一80.E，间距2—2.5km，长度约3—4km，最长约8km，近似平行等间距展布在城区和近郊Ⅸ的1 50km。

The lumbar were cut and stined with Masson Golder Trichrome for bone histomorphomemetric analysis. Result: The QiangGuYin group ovariectomized rats' in 1.5m, 4.5m, 6m, Tb. Th compared with Fosamax group with statistical significance; in 4. 5m, 6m, compared with control group in Tb. sp with statistical significance.

结果：强骨饮组1.5月、4.5月、6月骨小梁厚度与福善美组数据相比具有统计学意义，4.5月，6月骨小梁间距与福善美组相比具有统计学意义，强骨饮组和福善美组数据与空白组相比骨体积分数、骨小梁厚度、骨小梁间距都具有统计学意义。

Hexadecyl Hydrogen Maleate is a new kind of analyzer crystal for soft X-ray spectroscopy, with a large 2d spacing of 58.58A. HHM is hoped to give a better growth habit than octadecyl Hydrogen Maleate, because of its shorter chain length and narrower 2d spacing.

马来酸氢十六酯是一种新型的软X—射线分光晶体，晶面间距2d等于58.58A，与OHM属同一系列分光晶体，碳链的缩短、晶面间距的减小有望给出比OHM更好的生长和结晶习性。

First, the mathematic models of equidistant and inequidistant difference schemes are founded. Then, the range of influence, criteria and process of damage location detection are obtained. The index is also used to detect concrete damage with microcrack, namely without macrocrack.

建立了基于等间距、不等间距差分格式的损伤应变模态差分数学模型及其损伤位置直接指标法，提出了损伤位置判定准则、判定步骤及损伤影响区确定方法。

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。