查询词典 xylem rays

Cobia will follow larger animals such as sharks, turtles and manta rays in hope of scavenging a meal.

因数会更大的动物，如鲨鱼、龟和 manta 光线中清除一顿饭的期望。

Not many people, for example, are aware that computerised tomography scanning uses large doses of X-rays.

不是有很多人了解CT扫描时使用了大剂量的X光射线。

A concave lens causes rays to diverge as though they are coming from a focal point.

发散透镜使光线分开，就好象从焦点上发出来的那样。

Three LEDs biology light sources with different intensity for cell or tissue culture have been developed in the third part of this thesis. A concave lens to expand the beams of light, to focus the rays of light and an array of LEDs being set in the sphere connected with Fresnel lenses are three newly-designed in our systems.

实际测试数据表明：低强度光源输出的辐射照度范围为0.0021—0.9961(W／m~2)，在直径20mm的照射面积内所测辐射照度的标准偏差为0.02W／m~2(n=40，Mean：0.71 W／m~2)；中等强度光源输出的辐射照度范围为0.3579—11.2286(W／m~2)，在直径30mm照射面积内所测辐射照度的标准偏差为0.02W／m~2n=60，Mean：6.37 W／m~2；较高强度光源输出的辐射照度范围为17—110(W／m~2，在直径40mm照射面积内所测辐射照度的标准偏差为0.02W／m~2(n=80，Mean：71.54 W／m~2)。

Others began considering the virtues of a concave paraboloidal mirror as primary receptor: it had been known since Antiquity that such a mirror would bring parallel incident rays to a focus at one point.

其他人开始考虑的美德，凹抛物面反射镜作为主要受体：它已被称为自古以来这样的一面镜子，会带来平行事件射线的焦点在1点。

The Flame was lit from the sun's rays with the help of a concave mirror called skaphia nowadays we also use a concave mirror to light Olympic Flame.

圣火是通过一个叫skaphia 的半圆形凹面镜将阳光集中采集而成的。（凹面镜也在今天被用于奥林匹克圣火的采集。

Since these rays do not actually meet, they cannot form an image without a condensing lens of sort.

由于这些光线实际上不相交，如果不用某种会聚透镜的话，它们是不能成像的。

The rays passed through a condensing lens and formed a light pole with the diameter of 20 mm.

摘 要：通过直流电路驱动红外二级管发出的红外光恒功率发射，红外光经过聚光透镜，形成直径为20 mm的光柱。

60Co γ-rays and electron beam irradiation induced degradation of an azo dye Congo Red were presented in this paper.

利用60Coγ射线、电子束辐照刚果红水溶液，研究其降解行为。

In summer, because the vertical incident solar rays regionmoves by the equator to the north, causes of southeast trade crossingthe line the southern hemisphere to change the southwest monsoon toinvade Northern Hemisphere, meets one another with the originalNorthern Hemisphere's Northeast Tradewind, compels crowds this airrise, the increase convection current, again because the southwestmonsoon and the Northeast Tradewind direction is different, meets oneanother often creates the undulation and the whirlpool.

在夏季，因为太阳直射区域由赤道向北移，致使南半球之东南信风越过赤道转向成西南季风侵入北半球，和原来北半球的东北信风相遇，更迫挤此空气上升，增加对流作用，再因西南季风和东北信风方向不同，相遇时常造成波动和旋涡。

Must have Coordination and negotiation skill, flexible ideas, and be punctilious person.

必须具备较好的协调与谈判能力，头脑灵活，工作认真仔细

Result: 18 patients are all with simple eye.The pigment mole lies in nasal and temple sides of the ball conjunctiva,in which 2 lie in lacrimal caruncle and semilunar plica.

结果：18例患者均为单眼，色素痣大多数位于内外侧睑裂部球结膜面，2例位于泪阜及半月皱襞，经激光治疗后，10例色素痣消失，有5例行再次激光后消失，2例行第三次激光后消失，1例第四次激光后消失。