It can complete variable angle continuously placement, form concave curve surface, change the width of fiber belt.

The research result showed that: With the increase of distance from shield tunnel central axis, the initial excess pore water pressure decreased in a concave curve shape.

分析表明：随着离隧道中心的径向距离增加，土体各点的初始超孔隙水压力呈凹曲线衰减。研究了隧道埋深、盾构直径对土体初始超孔隙水压力的影响。

Single cam linkage mechanism can overcome the shortcomings mentioned above, however the new problem is that the mechanism can not generate the path which has concave curve.

单凸轮连杆组合机构可克服上述缺点，即可以方便地再现预定轨迹并有精确解，但其缺点是难以实现内凹曲线的轨迹复演。

The data also demonstrate that concave slope is more pro runoff production and soil erosion than other slope shapes ( convex, S, linear) under grassland ( alfalfa) conditions.

对于草地（紫花苜蓿）类型，凹坡相对于其它坡型（凸坡，S型，直线坡）最容易产生径流和侵蚀。

Finally get the following conclusions: ① Compared with planar sloped and concave slope, the toppling deformation of convex slope is easier to happen.

分析结果可以得到：①较之凹形坡与平形坡，凸形坡更有利于斜坡的倾倒变形破坏。

That is to say, the concave slope is the most stable, the horizontal slope is the second and the convex slope is the worst.

即在坡度一样的情况下，凹坡最稳定，平坡次之，凸坡稳定性最差。

Propagation of internal waves over linear slope, convex slope and concave slope are discussed by using of the transforms introduced in this dissertation.

利用提出的变换讨论了内波在线性斜坡地形、凸地形和凹地形上的传播特征，分析了入射波能通量在不同模态上的重新分布。

Comparison of the four kinds of slope indicates that the concave slope type is the best oil-bearing one.

通过对4种斜坡的类比表明：凹坡型为最佳含油斜坡。

Design of belt conveyor for concave slope variable turn

凹变坡转弯带式输送机的设计

The external cause is the mother current scouring the concave bank and the lateral circulation scouring the curved river channel.

凹岸部位主流线的顶冲和弯曲河道横向环流的侧蚀，是决口的外部因素；

The design methods of the apron protection for concave bank along subgrade river are effective measures pass through practical application.

通过工程实际应用，证明河湾凹岸路基冲刷防护采用护坦基脚式挡土墙或护坦式基脚护坡是一种经济有效、易行的浅基防护型式。

Concave bank Beach Bar Deposition of Meandering River

曲流河凹岸滩坝沉积模拟研究

On Security Distance-abeam Computation Model at Inland Curving Channel Concave Bank Intake Place

内河弯曲航道凹岸取水口处船舶安全横距计算模型研究

Apron Protection for Concave Bank Along River Subgrade of Mountain Area

山区沿河路基河湾凹岸的护坦防护

Pa/ Peof concave bank point bars averages 5.3, which is near that of half-matured point bar.

凹岸边摊的Pa／Pe值与半成熟边滩接近.平均为5.3；

Therefore, the scheme of four cages that are disposed on the side of concave bank is the last scheme according to the practical engineering problem.

因此，针对所要解决的工程实际问题，决定采用紧靠凹岸布置四道斜底槛的方式作为最终的消减急流冲击波方案。

The beam sizes reflected from the concave mirror and the plane mirror are 48 mm and 5.1 mm, respectively. The angle adjusting precision of the plane-concave resonator is 3.18 ′.

得到由凹面镜和平面镜反射回来的光斑直径分别为4.8mm和5.1mm，平凹腔的角度对准精度达到了3.18′。

Practical application showed that the improved crystallizers solved the problems such as concave big plane and flat side plane of the ingot successfully, and thereby the producing rate was enhanced effectively.

实践证明，对结晶器的改进，成功地解决了扁铸锭大面凹、小面分层的问题，提高了铸锭铣面成品率和热轧成品率。

An approximate analysis on concave ( plane) GRATING-MIRROR stable resonator

凹（平）面衍射光栅稳定共振腔的近似分析

Structural Design of a High-rise Building with Concave Plane

上南花苑城D区平面不规则高层建筑结构设计

A Film Thickness Instrument by Spectrophotometry Element of Holographic Concave Grating

用全息凹面光栅作为分光元件的膜厚测量仪