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The slope estimate is the sample covariance between x and y divided by the sample variance of x.

斜率估计量等于样本中x和 y 的协方差除以x的方差。若x和 y 正相关则斜率为正，反之为负。

CP9 (X = 501 860, Y = 705 035); thence in a southwesterly direction to Corner Point No.

Eailroad Area的东北边的两个区域：第一个区域：从隅角点CP7（X = 501 810，Y == 705 010）起，边界线向东北方向延伸至隅角点CP8（X = 501 840，Y = 705 050）；从该点起向东南方向延伸至隅角点CP9（X = 501 860，Y = 705 035）；从该点起向西南方向延伸至隅角点CP10（X = 501 785， Y = 704 935）。

The project involved:(1) Development of time and space resolved soft x-ray diagnostic instruments: a pinhole transmission grating streak spectrograph and a stigmatic grazing incidence grating flat-field streak spectrogrph, which are the most powerful in x-ray laser and laser plasma researches of our laboratory.

它们已成为我们实验室X射线激光和激光等离子体软X射线发射实验研究中最有力的诊断手段。（2）系统地研究了X射线激光增益介质—线状激光等离子体的均匀性。结果表明线聚焦激光照明的均匀性是实现均匀线性状激光等离子体的必要条件。

Work was also carried out. From numerous facts of ourprevious work, it might be seen that the stereoselectivity of aziridination viasulfonium ylides depends upon the sulfonium salts and C=X compounds. The moreactive the sulfonium ylide and C=X compound are, the more cis product is generated.Whereas, trans product will be major if the activity of the sulfonium ylide and C=Xcompound is low.

通过对以往工作的总结，我们发现，在经由硫叶立德途径的小环化反应中有一个经验规律：产物的立体选择性与所用的锍盐和C=X化合物有关，即锍盐和C=X化合物的活性增强，有利于形成顺式产物，反之，锍盐和C=X化合物的活性降低，有利于反式产物的形成。

In the experimental study, 12 joints tests are completed, including 5 uniplanar X joints loaded with axial forces, 3 uniplanar X joints loaded with in-plane bending, 4 multiplanar XX-joints loaded with axial forces, with the emphasis on the influence of β and the existence of the out-of-plane braces, of which the multiplanar XX-joints tests is the first experiment project in china.

试验重点研究节点支主管宽度比β以及平面外支管荷载等因素对节点性能的影响，共进行了3个足尺方管平面X型受压节点，3个足尺方管平面X型受弯节点、2个方、圆管杂交平面X型受压节点和4个足尺方管空间XX型节点试验，其中方管空间XX型相贯节点试验是国内的首次试验。

To say that X educates or is educating Y is to say at least that X is fostering desirable and morally unobjectionable dispositions in Y by the use of methods that are also desirable and morally unobjectionable, or at least that X is cultivating dispositions in Y by certain methods.

我们说 X 教育或正在教育 Y ，意味着至少 X 正在使用无可争议的符合意愿的和道德的方法，在 Y 身上培养着无可争议的符合意愿的和道德的性状，或者至少 Y 用某种方法正在培养 Y 的性状。

The oxygen uptake activity using Triton X- 100 as substrate in a resting cell experiment demonstrated that one of the isolates, P nitroreducens TX1, showed the highest activity to transform Triton X-lOO, 528 nmole/min/g cell wet weight among the isolates. The generation time of strain TX1 was only 1.2 h by using 0.5% of Triton X-100 as sole carbon source in MSB medium. Furthermore, this strain could even grow on the Triton X-l00 at a concentration of IO%-2O%.

本研究藉由测定各菌株分解TritonX-100时的氧气消耗活性发现，编号82.10.6之菌株，经鉴定并命名为P.nitroreducens TX1，每克湿重的菌株具有528 nmole /min的高耗氧活性，尤其，该菌株以0.5%的TritonX-100培养时，世代时间仅为1.2小时，即使在10%-20%的Triton-X-100的培养环境中亦能维持生长，在过去相关研究中均尚未发表有此一特殊之生长特性。

In addition, molecular orientation behaviors induced by shearing, electric field and magnetic field were investigated. The space group of the monomers A3EO7 and A9EO7 were determined as P2〓2〓2 and P112/m by means of electron diffraction and X-ray diffraction. Liquid crystalline properties of the monomer and the polymer were studied using DSC, variable X-ray diffraction, TEM and polarized optical microscope. Both monomers exhibit monotropic liquid crystalline behavior, and they also give a metastable phase on the cooling process. The polymer PA9EO7 shows enantiotropic liquid crystalline properties. Thus the rigid polymer backbone is not a fatal defect that completely distorts the packing arrangement of the mesogenic moiety in the side chain liquid crystalline polyacetylene.

结合电子衍射倾转方法和粉末X射线衍射技术，确定了两个液晶小分子A3EO7和A9EO7的晶胞参数和空间群，采用Cerius〓模拟软件，运用分子模拟的方法给出了小分子在晶胞中的排列方式；利用DSC、变温X射线衍射技术和透射电子显微镜研究了小分子和聚合物的液晶态，单体A3EO7和A9EO7表现出单向液晶性质，并且在降温过程中都表现出一个亚稳液晶相或亚稳结晶相，聚合物PA9EO7具有双向液晶性；采用偏光显微镜和X射线平板照相技术，研究了剪切和电场对聚合物分子取向的影响，在不同的液晶态，剪切作用对聚合物PA9EO7具有不同的诱导取向结果，直流电场可以诱导聚合物联苯液晶基元沿施加电场方向取向。

The biomechanical tests showed that two kinds of artificial bones had not significant difference on compressive strength and Young\'s modulus(P＞0.05),while the flexural strength of nano-nacre artificial bone was less than the control group(P＜0.05).3.The results of CCK-8 showed that the difference were not significant in each group,the proliferation of osteoblast reached the peak at the 5th day;7 days after being co-cultured,the total protein content of study group was higher than control group and blank group(P＜0.05),while the difference between control group and blank group was not significantP＞0.05The difference of alkaline phosphatase activities among three groups was not significant(P＞0.05The SEM view showed that osteoblast attached and grew well in two kinds of artificial bone.4.X-ray photography showed that two kinds of powder started to degrade in 2 weeks;this phenomenon became more appear in 4 weeks,nano-nacre powder degraded faster than micron-nacre powder,while the hole shadow was easy to be found;in 8 weeks,all the femoral holes recovered and returned to normal bone mineral density in all groups.Analysis of tetracycline fluorescent double marks in the hard tissue grinding slices indicated that new bone grew fastest around the bone defect area in study group,while most slowly in blank groupP＜0.05 SEM(scanning electron microscope observation showed that nano-nacre powder degraded more quickly.The same result can be found through the demineralized sections morphometric analysis,and both of the composite artificial bones made from those two kinds of nacre powder had the good connection with the adjacent tissue in rats body without apparent inflammatory response.5.X-ray photography showed that rabbit\'s bone defects healed faster in study group since NNAB implanted than in control group since MNAB implanted.At 24 weeks after operation,bone density in radial defects had nearly accessed to the normal area,while lower in control group,and turned up nonunion in blank group;The checking of BMD showed that results in study group were higher than those in control group at 8,16 and 24 week(P＜0.05), and the difference between the BMD values in study group at 24 week and those in blank group was not significant(P＞0.05).The gross specimens showed satisfactory histocompatibility both in study group and in control group,with bone tissue growing from two sides into the center of implanted materials; Normal slices in HE stain and hard tissue grinding slices in Stevenel\'s blue/Van Geison\'s picro-fuchsin stain showed that the bone growth tendency was better in study group than that in control group,and the medullary cavity had been penetrated to the implanted materials in study group at 24 week;Analysis of tetracycline fluorescent double marks in the hard tissue grinding slices indicated that new bone in both groups grew fastest 8 weeks after surgery,while slow down at 16 week.

纳米珍珠层/消旋聚乳酸复合人工骨与微米珍珠层/消旋聚乳酸复合人工骨分别与成骨细胞共培养后，其各时间点CCK-8法检测值与空白对照无显著差异(P＞0.05)，成骨细胞均在第5天达到增殖高峰期；培养7天后，实验组细胞蛋白含量高于对照组及空白组(P＜0.05)，后两者之间则无显著差异P＞0.05碱性磷酸酶活性在三组间均无显著差异(P＞0.05电镜下可见成骨细胞在两种人工骨上都有良好生长贴附能力。4.X-ray显示两种粉体在大鼠股骨骨洞植入第2周时都开始出现了降解，第4周时更为明显，纳米珍珠层粉较之微米珍珠层粉降解更快，而空白对照组骨洞阴影仍可见，至8周时，则所有组骨洞均己闭合修复，X-ray下已不可见原钻孔痕迹，恢复正常骨质密度；硬组织磨片四环素荧光双标记结果显示纳米珍珠层粉植入组较其余两组在骨缺损区周围新骨生长速度更快，空白组速度最慢P＜0.05电镜观察及常规脱钙切片亦可见到纳米粉体降解较快；由以上两种原材料制得的纳米珍珠层/消旋聚乳酸复合人工骨与微米珍珠层/消旋聚乳酸复合人工骨在大鼠体内均与周围组织结合良好，无明显炎症反应。5.X-ray显示纳米珍珠层/消旋聚乳酸复合人工骨植入兔桡骨缺损区后其骨愈合速度较对照组微米珍珠层/消旋聚乳酸复合人工骨植入的快，至植入术后24周，实验组骨缺损区接近正常骨密度，对照组骨缺损区密度较低，空白组则呈现骨不连状态；骨密度测量结果显示术后8周、16周、24周实验组的骨密度值高于对照组(P＜0.05，24周实验组的骨密度值与术前所测得的正常值无显著性差异P＞0.05动物取材大体所见均显示组织相容性良好，骨组织逐渐由植入材料两端向中央生长；常规切片HE染色及硬组织磨片Stevenel\'s blue/Van Geison\'s picro-fuchsin联合染色均可见实验组骨缺损区长势优于对照组，至术后24周，实验组骨髓腔与材料已呈相交通状；硬组织磨片荧光显微镜下观察，两组材料在术后8周处于骨生长最快速时期，16周时速度开始减慢，术后4、8、16周时实验组的新骨生长速度均较对照组的快

Moreover, all the signals on X and Y only located in the heterochromatic regions, showing the same distribution with those of C-band.

所有X染色体上的信号是一致的，而X、Y染色体上的信号分布则彼此不同。X、Y染色体上的杂交信号区域均集中于异染色质区，信号分布模式同X、Y上异染色质分布模式完全吻合。

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。