查询词典 developable surface

Particular configurations on bedding planes and on the surface perpendicular to the bedding planes lead to different explanations for the genesis of these silty dykes:(1) they are considered as the oldest trace fossils of metazoan according to the spindle-crack of siltstones on the bedding plane and the sand-filling tube configurations on the surface perpendicular to the bedding plane;(2) they are considered as the liquefied sand-veins induced by earthquake according to the sinuous configuration of siltstone dykes on the surface perpendicular to the bedding plane and the obvious liquation feature.

由于该粉砂岩岩墙在层面上和层内具有特别的形态，因而对其成因具有多种解释：在层面上呈纺锤状粉砂岩裂缝以及在层内呈砂质充填管形态，从而被认为是最古老的后生动物遗迹化石；在层内呈弯弯曲曲的粉砂岩岩墙以及明显的流体化作用特点，所以又被解释为地震振荡作用形成的液化砂岩脉。

In order to prevent corrosion of gear reducer surface and bedplate surface occurring during operation after installation, apply a uniform thin film of MoS2 lubricating grease to bedplate surface.

为保证减速机精确定位，修磨因不慎而造成的减速机底面上和基础台板表面上的凸痕等。

Scientists used to explore on the surface of the ocean.now they are explore below the surface,too.they want to know about ocean water and the plant and animal life deep in the ocean.in 1934 the scientist William Beebe dived 3,000 feet below the surface in a hollow steel ball.in 1935 august piccard dived 10,330 feet.

科学家用来探讨在表面上的ocean.now他们探索下面从表面上看， too.they想要知道海洋的水与植物和动物生命的深层在ocean.in 1934年科学家威廉beebe俯冲3000英尺低于表面在一个中空钢ball.in 1935年8月piccard俯冲10330英尺。

Abstract］ objective to evaluate the effect of regulating bloodmobile sterilization management.methods making a statistical contrast to the number of bacterial in the air flow,on object surface in the bloodmobile car before and after regulating sterilization management.results before regulating management,the total excess rate of bacteria in the air is 41.67% while the rate of object surface is 20.83% in the car.after regulating management,the total excess rate of bacteria in the air is 4.17% while the rate of object surface is 0.00%.the differences were significant.conclusion to realize regulative and effective sterilization management,consolidate sterilization measures,guarantee the quality of blood and the safety of blood collection is of important significance.

摘要］ 目的评价规范流动采血车消毒灭菌管理的效果。方法对流动采血车内的空气、物表在规范消毒灭菌管理前后细菌培养数量的统计对比。结果规范管理前车内空气细菌总数超标率达41.67%，物表达20.83%。而规范管理后车内空气细菌超标率是4.17%，物表细菌超标率是0，差异有统计学意义。结论对流动采血车实施规范有效的消毒灭菌管理，务实消毒灭菌措施，对保证血液质量和采血安全具有重要的意义。

The contact curved surface equations and the contact plane surface equations have been worked out. The boundary curve eqations of the contact surface have been founded.

运用数学分析方法，首次对板式楔横轧工艺的轧件稳定旋转条件、轧件不产生缩颈拉裂条件进行了理论研究。

This paper discusses minimal surface in arbitrary boundary and describes a new method for approximating to minimal surface with B- spline surface in arbitrary bounded domain.

讨论了任意边界下的极小曲面造型问题，提出了一个用B-样条函数做任意有界区域上极小曲面造型的新方法。

Damage function is introduced in elastic and plastic modulus expression of the bounding surface formulation directly; then a bounding surface damage model for structural soft soil is developed; the complication induced by introducing damage parameter into the bounding surface equation is avoided and its numerical implementation is easy for the analysis of earth structures.

在边界面理论的弹塑性模量中直接引入损伤函数，建立结构性软土的边界面损伤模型，避免了在边界面方程中引入损伤变量带来的复杂性，易于在土工数值分析时采用。

In the bounding surface masonry model, the sliding yield surface is considered as isotropic hardening and rotating hardening bounding surface, and the masonry model is expanded from monotonic loading to complex loading.

把滑移屈服面看作为等向硬化和旋转硬化的边界面，从而合理地把砌块体模型从单调荷载推广到复杂荷载情况。。。

Ram sealing surface than the valve seat to seal a broad margin, and to ensure that the valve is not in use before the sealing of the bottom line and the gate valve seat bottom line sealing surface at the same level, so that the valve in the use of a certain period of time after not even wear Will reduce the need to ensure the sealing surface width.

闸板密封面比阀座密封面宽出一定的余量，并保证阀门在未使用前闸板密封面底线与阀座密封面底线在同一高度，使阀门在使用一定时间后即使磨损也不会减少必须保证的密封面宽度。

An area of a cross section of the second discharge-port portion that is parallel to the main surface of the element substrate is larger than an area of the border portion at any cross section of the second discharge-port portion from an opening surface facing the bubble generation chamber to an end surface facing the first discharge-port portion.

平行于元件基板的第二排放口部分的横截面面积大于边界部分在由面向发泡腔室的开放表面延伸到面向第一排放口部分的端面对第二排放口部分所做的任一剖面处的面积。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样