concave surface的例句大全

the velocity, acceleration and time of a particle sliding down along a horizontally free concave surface are discussed.

对于一个质点从可自由移动的光滑的凹曲面上滑下的速度、加速度和时间作了一般性讨论，建立了相应的公式。

the velocity, acceleration and time of a particle sliding down along a horizontally free concave surface are discussed.

对于一个质点从可自由移动的光滑的凹曲面上滑下的速度、加速度和时间作了一般性讨论，建立了相应的公式。

The design of a big calibers concave mirror with the elliptical sphere surface

大口径椭球凹面取样镜设计

A feeding bottle with a temperature display screen. A concave casing is arranged on the outer wall surface on the upper part of the bottle body.

带有温度显示屏的奶瓶，瓶体上部的外壁面上设置一凹壳；

berry light green, subglobose, 5-10 mm in diam. , surface of exocarp coarse, apex with 3 concave slits.

浆果淡绿，近球形，直径的5-10毫米，外果皮表面的粗糙的，先端具3凹裂缝。

adaxial surface deep green, sparsely scaly, densely white-pubescent and thinly hispid, midrib raised abaxially, concave adaxially.

正面深绿色，疏生鳞片，和稀疏具糙硬毛的白色短柔毛的浓密，背面，凹的中脉突起正面。

leaf blade apex obtuse to acute, apiculate; scales on abaxial surface concave, veins conspicuous on both sides; corolla scaly outside.

叶片先端钝的到锐尖，具细尖；鳞片在背面凹面，脉明显的两面；有鳞的花冠在外面。

adaxial surface glabrous; midrib raised abaxially, concave adaxially;

正面无毛背面中脉突起，凹的正面；

adaxial surface deep green, sparsely scaly, midrib and lateral veins raised abaxially, concave adaxially.

正面深绿色，疏生鳞片，中脉和侧脉背面突起，正面凹。

the surface of the duplexer is provided with a duplexer concave cavity and a radiating part;

所述双工器的表面上设有双工器凹腔和散热部；

the line of intersection, inward concave and shallow area of curved surface are the difficult points in curved surface machining.

曲面交线、面内凹区域及曲面中浅平面的加工是曲面加工中的难点。

the medial surface of the coracoid is strongly concave;

乌喙骨的内面强烈凹陷；

the electroplated plane layer is provided with a hollow, and inner surface of the inner concave layer is provided with a coloring face.

在电镀平面层上设有镂空，在所述的内凹层的内表面设有着色面。

this method is the use of twist rod to beat the cold bending axis concave, so that here at the surface of shaft extension and more straight.

这个方法是利用捻棒来冷打轴的弯曲凹面，使轴在此处表面延伸而较直。

Composite roller surface is longitudinal streak, concave band noise.

复合辊表面有纵向条痕 、 凹纹.

The null test method for concave conic surface is discussed.

本文探讨了对凹二次曲面的零位检验方法.

Divide the erosion failure surface into four different types: linear, Convex curve, upward Concave arc and downward concave arc.

将破坏面形态划分为直线型、凸弧型、上凹弧型、下凹弧型共四种类型。

These mainly behave at that the water flow losses it's instability and generates the transverse gradient that the water surface of concave bank is higher than convex bank, and that the big diamond impact wave even occurs on the water surface.

突出体现在水流失去平衡，产生凹岸高、凸岸低的横比降，而且弯道急流表面还将产生水冠较大的菱形冲击波。

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

它可以实现连续变角度铺放，并可成形凹曲面，且纤维带宽可变化。

As the liquid core rate increases, concave deformations increased on the top and bottom surface of a rolled metal;

在有液芯存在时，轧件的上下表面向内凹陷，侧面易于形成单鼓变形，并且随液芯率的增大而增大；