查询词典 asymptotic expansion

The results shows that the flow characteristics of SiC-AlN granulated powder is obviously promoted after spray drying and a suitable particles grade match. With the increasing of pressure, the density of green body increases by the style of ladder at the pressure range of 4080 MPa, 80160 MPa and 160220 MPa, the green body is uniform and densification without hard pelleted particles above 160 MPa. The pressureless sintering SiC-AlN multiphase ceramic possesses superior sintering properties and mechanical properties. It is due to the rampart formation of AlN to SiC grain growth and the reaction of SiC and AlN to form 2H solid solution. It results in the grain fining, crack expansion producing bypass and deflection, fracture section producing tearing-open and pulling-out effects, which cooperatively improves the strength and fracture toughness of the multiphase ceramics.

结果表明：喷雾造粒后，复合粉体的流动特性显著提高，粒度级配合理；随着压强增加，坯体密度在40~80、80~160和160~220 MPa范围内呈现阶梯式增长，160 MPa以上成形后素坯均匀致密，无硬球颗粒存在；无压烧结SiC-AlN复相陶瓷具有优越的烧结性能和力学性能，这是由于AlN对SiC晶粒形成生长势垒，并反应生成2H型固溶体，从而细化晶粒，导致裂纹扩展产生了绕道与偏转效应，呈现晶粒撕裂与拨出现象，协同改善了复相陶瓷的强度及断裂韧性。

It is considered that fatigue crack is early produced on drill pipes, because the vibration load of drilling tools in air drilling is more severe than that in mud drilling. Fatigue cracks easily occur under alternating vibration. Because the current wellhead detecting instruments can not be used to reflect the change of pump pressure produced after drill pipe piercement timely and accurately, effective measures can not be taken in time to prevent the expansion of fatigue cracks. As a result, drill pipe fracture accidents occur.

失效分析表明，钻杆属于早期疲劳断裂，断裂主要原因是在空气钻井过程中钻具受到的震动载荷远大于钻井液钻井过程中的震动载荷，在交变的震动载荷作用下，钻具容易产生疲劳裂纹；由于现有的井口检测仪表不能精确及时反映钻杆刺穿之后产生的泵压变化，无法及时采取预防措施，疲劳裂纹不断扩展，最终导致了钻杆断裂失效。

It is considered that fatigue crack is early produced on drill pipes, because the vibration load of drilling tools in air drilling is more severe than in mud drilling. Fatigue cracks easily occur under alternating vibration. Because the current wellhead detecting instruments can not be used to reflect the change of pump pressure produced after drill pipe piercement timely and accurately, effective measures can not be taken in time to prevent the expansion of fatigue cracks. As a result, drill pipe fracture accidents occur.

失效分析表明，钻杆属于早期疲劳断裂，断裂主要原因是在空气钻井过程中钻具受到的震动载荷远大于钻井液钻井过程中的震动载荷，在交变的震动载荷作用下，钻具容易产生疲劳裂纹；由于现有的井口检测仪表不能精确及时反映钻杆刺穿之后产生的泵压变化，无法及时采取预防措施，疲劳裂纹不断扩展，最终导致了钻杆断裂失效。

The arguments are that agricultural technology belongs to the quasi public product, classified into the public type, the market type and the blend of both, and that it is a combination of agricultural technology expansion, public welfare and the market.

指出园区专家大院是农业科技园技术推广的重要载体，它是园区农业科研成果实验、示范、推广、产业有机结合的平台，它具有中介服务、人才培养、技术推广、市场对接、产业带动等功能。

World War II expansion programs led to construction of two large groups of subchasers, the new 110-foot wooden-hulled craft and the 173-foot steel-hulled type. By 1943, it was felt desirable to differentiate between the two types. The type symbol PC was retained for the steel 173-footers, and the separate symbol SC was adopted for the 110-foot vessels.

根据二战舰队扩充计划开始建造两个型号的猎潜艇，新110尺木制艇和173尺钢制艇。1943年海军觉得应该对两型艇加以区分。173尺钢制艇保留PC编号系统，而单独的SC编号系统被分配给新110尺木制艇。

According to the structure of wood cell wall, the preparation of aerogel-type wood mainly includes three steps, namely the destruction of wood cell wall in S3 layer, the expansion of wood cell wall and supercritical drying.

根据木材细胞壁的结构，气凝胶型木材的制备主要包括3个步骤：木材细胞壁S3层的破坏；木材细胞壁的膨化；超临界干燥。

The cell outline was collected with two-step expansion model of modified Snake,at the same time;greedy algorithm was applied to reduce the operative time of procedure.Upon the basis that the segmentation of wood cell intracavity and edge was finished,wood cell wall was identified.

利用改进的Snake两步膨胀模型对细胞轮廓进行提取，同时应用贪婪优化算法，减少程序运行时间，在完成对木材细胞内腔和边缘分割的基础上，完成对木材细胞壁的识别。

He has slashed interest rates; rolled out a dizzying array of new lending programmes; backed the debt of Bear Stearns, a failing investment bank; agreed to lend to Fannie Mae and Freddie Mac, America's troubled, quasi-private mortgage agencies; argued for fiscal stimulus and mortgage write-downs; and proposed an expansion of the Fed's regulatory domain.

他降低利息、制定一系列令人眼花缭乱的新的借贷政策、援助濒临破产的贝尔斯登贷款、同意借钱给两家深受危机影响的次级个人抵押机构房利美和房地美；决定实施扩张性的财政政策和抵押物的资产减值政策并且提议扩大美联储的监管范围。

He has slashed interest rates; rolled out a dizzying array of new lending programmes; back ed the debt of Bear Stearns, a failing investment bank; agreed to lend to Fannie Mae and Freddie Mac, America's troubled, quasi-private mortgage agencies; argued for fiscal stimulus and mortgage write-downs; and proposed an expansion of the Fed's regulatory domain.

他降低利息、制定一系列令人眼花缭乱的新的借贷政策、援助濒临破产的贝尔斯登贷款、同意借钱给两家深受危机影响的次级个人抵押机构房利美和房地美；决定实施扩张性的财政政策和抵押物的资产减值政策并且提议扩大美联储的监管范围。

If we simplify the problem of race, summed up, and its negative impact on the expansion of that distorted reality, as if, we have committed Pastor Wright and the same error.

如果我们把种族问题简单化、归纳化，把它的负面影响扩大化以至于扭曲了现实，如果那样的话，我们就犯了和赖特牧师一样的错误。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48