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In existing technology, the nonnal way is adopting the four-bar linkage mechanism to imitate the arc or the linear movement. On the theoretical analysis, its movement precision can meet the requirement, while in the operation, because of the abrasion of bearings in gemel, which do much greater effect on movement than the former, its movement precision goes much beyond the theoretical value.

现有技术中一般是采用四连杆机构来仿弧线或直线运动，从理论上讲其运动精度是能够满足要求的，但在实际使用中，由于铰链点轴承的磨损（另外，装配时也预留了一定的轴承间隙），对运动轨迹产生的影响很大，其运动精度就大大超出理论值。

From the point of view of relation logic, not only can proposition O be reversed but also its reverse has general significance as proposition A, E, I, O do, and the conclusion of its reverse is not any kind of proposition

从关系逻辑的观点看，O命题不但是可以换位的——其换位所得的结论不是 A、E、I、O命题——而且如同 A、E、I 命题的换位一样，O 命题的换位也是有其一般意义的

From the point of view of relation logic, not only can proposition O be reversed but also its reverse has general significance as proposition A, E, I, O do, and the conclusion of its reverse is not any kind of pr...

从关系逻辑的观点看，O命题不但是可以换位的——其换位所得的结论不是 A、E、I、O命题——而且如同 A、E、I命题的换位一样，O命题的换位也是有其一般意义的

In view of the dialectic relation between certainty and uncertainty, the schemed index set and ideal index set were taken as a set pair to define the connectivity distance of generalized weight between all other schemes and the positive scheme as well as the distance between all other schemes and the negative schemes.

从确定性与不确定性辨证关系出发，将方案指标集与指标理想集作为集对，给出了各方案与正理想方案的广义权联系度距离定义、各方案与负理想方案的广义权联系度距离定义，讨论了现阶段集对分析在多属性决策中的应用情况，指出了其存在的不足，提出了基于广义权联系度距离的多属性决策模型，并将其应用于矿山设备优选中。

In two-dimensional space, derived from the geometric transformation matrix from the transformation matrix to understand its geometric meaning.

详细说明：在二维空间内，从几何变换推导变换矩阵，从变换矩阵理解其几何意义。

Results showed that the con- tent of phospholipids decreased from 23.3% to 11.2%,the content of free fatty acid increased from 1.6% to 11.5%,the content of glyceride had no significant change;SFA、MUFA and PUFA of glyceride and phos- pholipids had no significant change;in the free fatty acid,the content of PUFA significantly decreased,the content of MUFA were also decreased,but had no significant change,the content of SFA increased signifi- cantly.

结果表明：磷脂的含量从23.3%减少到11.2%，游离脂肪酸的含量从1.6%增加到11.5%，甘油酯的含量没有发生显著性变化；甘油酯和磷脂中的饱和脂肪酸、单不饱和脂肪酸、多不饱和脂肪酸都无显著性变化；游离脂肪酸中，PUFA的含量显著减少，MUFA的含量减少，但其变化不显著，SFA的含量显著增加。

I from as follows 5 go to design teaching method, effort practice, brave reform, promote student of overall development:let the student is in the reality scenario experience and comprehension mathematics, development its space idea;encouragement student independence thinking, leading student independence investigate, cooperation exchanges;in the teaching process adoption of the method should make student thoroughly from each aspect comprehension, encouragement work°out problem strategy of diversification;in the teaching process should availably usage indirect method;in the teaching process should progressively the development student's mathematics speech.

我从如下五个方面去设计教法，努力实践，大胆革新，促进学生的全面发展：让学生在现实情境中体验和理解数学，发展其空间观念；鼓励学生独立思考，引导学生自主探索，合作交流；教学过程中采用的方法应使学生深入地从各个方面理解，鼓励解决问题策略的多样化；教学过程中应有效地使用间接法；教学过程中应积极地发展学生的数学言语。

Camphor oil was abstracted from the greenheart leaf by the steam-distil method and used as main component of corrosion inhibitor for hydrochloric acid cleaning .

用水蒸气-蒸馏法从樟树叶中提取桉叶油；并将其作为盐酸酸洗缓蚀剂的主要成分，用正交实验法优选了复合缓蚀剂配方；采用线性极化法评价缓蚀剂的缓蚀效率，并对其缓蚀机理进行了初步探讨。

Seven molybdenite samples from greisen ore body and quartz vein tungsten ore body associated with black tungsten ore were chosen for Re-Os isotopic dating and model age of (141.4±2.2) Ma~(158.2±2.2) Ma were obtained. The isochrone age of molybdenites from greisen type tungsten-tin ore body is (156.8±3.9) Ma, which indicates that its mineralogenetic epoch is at the Middle Jurassic, corresponds to the second stage of early Yanshanian period. And the model age for the samples from greisen ore body and from quartz vein ore body are (150.7±2.4) Ma~(158.2±2.2) Ma and (141.4±2.2) Ma~(151.0±2.4) Ma respectively, which indicates that the mineralization time of the quartz vein ore body is slightly earlier than that of greisen ore body.

文章选取云英岩型矿体及上部石英脉型钨矿体中与黑钨矿共生的辉钼矿7件，进行Re-Os等时线年龄测定，得到其模式年龄为(141.4±2.2) Ma~(158.2±2.2)Ma，其中云英型钨锡矿体中辉钼矿等时线年龄为(156.8±3.9)Ma，成矿时代为中侏罗世，对应于燕山早期第二阶段；从云英岩矿体中样品模式年龄为(150.7±2.4)Ma~(158.2±2.2)Ma，石英脉型矿体中样品模式年龄为(141.4±2.2)Ma~(151.0±2.4)Ma。

A modern British critics called Herbert Grierson, and that are reasonable:"He's not pretending to the history of the novel, in fact, his historical facts and dates are very casual, they are by the novelists and poets portray things in a certain period of time may be how the image , so different from them and the history is that they cause us convincingly in the past, when a picture of the illusion of life."

他的大型小型之说，可以理解为宏观史学和微观史学，宏观史学让我们了解人类存在之前和之后的种种变化，例如大自然的演变、人类社会的生成和发展，其政治、经济、军事、宗教、文化等等的状况；微观史学则让我们了解历史中活动着的具体的人，从王公贵族到普通百姓，从国事活动到日常生活。

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。