封闭的

The surface generated by a straight line intersecting and moving along a closed plane curve, the directrix, while remaining parallel to a fixed straight line that is not on or parallel to the plane of the directrix.

柱面一条直线与一个封闭的平面曲线相交及沿着平面曲线移动所形成的平面，准线则与一个不在此准线平面上或者不与此准线平面平行的固定直线保持平行

Divining North Korea's true intentions is always difficult; there is no more closed society on earth.

推测朝鲜的真实意图总是困难的；在地球上，再也没有如此封闭的社会。

The shroud has an open sidewall and a closed bottom with an outwardly and downwardly extending skirt that extends to the about the midpoint of the height of the container.

该套筒具有一开口侧壁和一封闭的底部，且具有一向外并向下延伸的裙缘，该裙缘延伸至该容器高度的中点附近。

SPACIOUS, ENCLOSED LOT OF 10,498 SQUARE FEET.

宽敞的，封闭的，有10498平方英尺的土地。

According to the concept of envelope evaluates equation of contour,the conclusion can be reached that the contour of torus is colse elliptc equidistant curve but is not ellipse.

根据包络的概念解出轮廓线的方程式，从而得出结论：圆环面的轮廓线是封闭的椭圆等距曲线，而不是椭圆。

By comparison with the narrow, ironclad days of fathers, there was an expansiveness, I thought, in the days mothers.

跟做父亲的那种狭隘、封闭的生活相比，我觉得做母亲的日子过得比较心情舒畅。

Most ferrosilicon electric furnaces are open stove. Ferromanganese and ferrochromium electric furnaces which are closed-end are little.Large quantities of plume and dust which are seriously polluted to the atmosphere environment and natural ecological environment are emitting into the sky over the factory areas.

硅铁电路绝大部分还是敞口炉，锰铁和铬铁电炉已封闭的尚属少数，厂区的上空还大量散发烟尘对大气环境和自然生态环境的污染十分严重。

The warm, enclosed environment is ideal for bacteria and fungi to grow.

温暖的，封闭的环境，是理想的细菌和真菌成长。

The fermentation time is shortened but it may go mouldy and you may see and smell the mould on it, so

通常湿仓普洱茶中被陈放在潮湿的环境中，封闭的地窖里使其加速发酵湿仓发酵缩短了其因有的发酵时间，口味更为浓郁，但通常会有霉变发生，茶面上见霉菌或闻起来有霉变的气味，其卫生情况较差。

It's only in the hermetically sealed world of global climate-change negotiations that measuring your reduction from' 1990 instead of 2005 'would be treated as sacrosanct,' he said.

他说，只是在全球气候谈判这种完全封闭的情况下，按1990年而不是2005年衡量排放的削减才被视为神圣不可侵犯的准则。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。