查询词典 cleavage

A metamorphic rock, intermediate between shale and slate, that does not possess true slaty cleavage .

厚层泥岩一种变质岩，在页岩与板岩之间，不具备真正的板块解理

Being combining with products distribution in styrene oxidation, we propose the styrene epoxidation carry out with Ti metallacyclo intermediates, And at the same time Ti-ZSM-5 have properties both catalytic epoxidation and acid-catalysis, namely the skeletal Ti can catalyze styrene epoxidation to styrene oxide and the skeletal Ti and Al can provide Lewis acid site to cause the rearrangement of styrene oxide to phenylacetaldehyde rapidly, the solvolysis to glycols and the cleavage of C=C double bond. Ti-ZSM-5 can also provide Bronsted acid site simultaneously, which is also catalytic center for the solvolysis to glycols.

同时结合Ti-ZSM-5催化选择性氧化苯乙烯反应的产物分布结果，提出苯乙烯环氧化反应可能是通过金属有机环机理进行；Ti-ZSM-5同时具有催化环氧化和酸催化两种功能，其骨架钛可催化苯乙烯环氧化生成环氧苯乙烷，而骨架钛和骨架铝等可提供Lewis酸位使环氧苯乙烷迅速发生重排生成苯乙醛从而使其成为反应的主要产物，同时还可发生加成以及碳碳键的裂解等副反应：Ti-ZSM-5也提供Bronsted酸位，它也是生成加成产物的活性中心。

The growth and nucleation rates of〓 cleavage face of YbYAB crystal are all very fast, because so many growth steps and growth centers were formed within only 2～3 second at the temperature near the saturate point. No spiral growth steps can be found, so growth mechanism is twodimensional nucleation. When the flux temperature increases for only 0.5℃ above the saturate point, the spiral melting holes are formed. The transformation from growth morphologies to melting morphologies is very sensitive to the temperature. When the temperature increases another 1℃, the spiral melting holes transform into two-dimensional nucleation melting holes.

YbYAB的〓解理面的生长及成核速度都非常快，在比饱和点低0.5～1℃的温度下，当生长2～3秒钟时，可以看到许多生长中心与生长台阶的形成，在较宽的台阶上还可以看到二维核的形成，没有看到螺旋中心，说明生长机理是二维成核生长；当温度比饱和点高0.5℃时，在〓解理面上形成螺旋状熔坑，这表明形貌由生长到熔化的转变与温度的关系是非常敏感的；当温度比饱和点高1.5℃时，螺旋状熔坑转变为二维成核状熔坑。

The perfect cleavage of spodumene makes it considerably more difficult to facet, and a little more care is necessary to prevent damage when wearing a spodumene gem set in a ring.

锂辉石的解理完全，因容易裂阙，很难加以切割。但也正因如此，佩带一些锂辉石的戒指不易遭受一些损坏。锂辉石通常适合做一些吊咀、胸针和耳环。

The best approach-is-by cleavage of the sternum because of more heart rupture occurs in the right heart.

应强调术中控制出血的有效措施及可靠的心脏破裂修补方法。

It is suitable to analysis the process cleavage of soybean sterol as well as quality control of product.

该方法灵敏度高、选择性好、操作简便、定量准确，适用植物甾醇微生物侧链降解过程中产物的分析及产品质量控制。

Stibnite physical properties are: lead-gray, dark gray streak, strong metallic luster, opaque, there is a group of development along the cylinder full plate surface cleavage, sexual crisp.

辉锑矿物理性质主要有：铅灰色，条痕黑灰色，强金属光泽，不透明，沿柱面发育有一组完全板面解理，性脆。

Ore structures appeared euhedral and subhedral granular, polygonal cleavage, anhdral granular and sheet texture.

矿石构造主要出现致密块状矿石，条带状磁铁矿和浸染状磁铁矿；矿石结构包括自形、半自形粒状结构，多边形解理结构、他形粒状结构和片状结构(1∶20万富蕴幅，1978)。

Computer was used to analyze the possible secondary cleavage sites on HPV11 E2 mRNA and to predict the secondary structures of substrate and ribozymes. According to the theory of Symons headhammer ribozyme, there are 32 sites to targetting sequences.

遵循Symons锤头状核酶结构和GUX剪切位点原则，靶序列存在32个剪切位点，通过计算机软件分析核酶的最佳剪切位点，并对底物及核酶的二级结构进行预测及进行相应基因生物学功能和基因同源性分析，筛选出2个锤头结构核酶。

The development speed of gynogenetic embryos was later than that of the control group, and aneuploids were found in this study. The obvious improved survival of trochophore larvae with a peak at 40s UV exposure suggested the presence of a Hertwig effect in the gynogenesis of A. pectinata. When sperms were irradiated for 40s, the cleavage rate was relatively high (51.2%), the developmental rate of D-larvae became zero, and the rate of haploid reached the highest (36.8%).

经紫外线照射的精子受精后所产生的单倍体胚胎发育速度慢于正常受精所产生的二倍体胚胎，各照射组均出现非整倍体。40s照射组中卵裂率达到51.2%，D型幼虫发生率为0，单倍体率最高，达到36.8%，出现"Hertwig效应"。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。