查询词典 turtle shell

Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.

单馈反射面赋形天线是未来星载天线发展的一个重要形式，分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场；介绍了基于几何光学的反射面天线赋形方法；针对赋形过程中辐射场的快速分析要求，比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法；利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析，实现中国大陆的30dB增益覆盖，通过数值计算研究了固定增益期望下的口径尺寸随频率的变化，以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。

High single-shell of the Sun crusher for the broken shell bamboo shoots and other crops bellflower.

四辊单段笋壳破碎机，用于破碎笋壳及其它农作物的桔梗。

Other names shell disease goes by is, box burnt disease, shell rot , brown spot, black spot, burn spot or rust disease.

其他名称壳病的推移是，箱烧病，壳病，褐斑病，黑斑病，锈病或烧斑病。

Shotgun shell, such as buckshot shell and shotshell, is different from general cartridge. It has a plastic wad in which many ball shots are loaded.

霰枪弹不同于一般枪弹，以鹿弹和霰弹为例，它有一个塑料弹托，弹托内一般装有数个球形弹子。

The length of the fuse is set to last until the shell reaches the proper altitude. At that point, the fuse ignites the bursting charge, which explodes the shell.

导火线的长度能够支持礼花弹到达一定的高度、到达指定高度后，导火线点燃爆炸点，使得礼花弹爆炸。

There is another genus of the hard-shell kind, which is called oyster; another of the soft-shell kind, not as yet designated by a single term, such as the spiny crawfish and the various kinds of crabs and lobsters; and another of molluscs, as the two kinds of calamary and the cuttle-fish; that of insects is different.

还有一种硬壳类叫做牡蛎；另外一种软壳类，至今没有被单一的条件确定，例如多刺的小龙虾和不同种类的螃蟹与龙虾；另一种软体动物，像是枪乌贼和乌贼；昆虫是不同的。

During a special biomineralization process—shell regeneration, we found that both CaLP exhibit special functions in shell related secretory vesicles; during the differentiation of osteoblast MC3T3-E1, CaLP exhibite significant effect on its differentiation and biomineralization.

在对切壳修复这一特殊的生物矿化过程的研究中发现CaLP积极参与了新生贝壳的形成；在前成骨细胞MC3T3-E1向成骨细胞分化的过程中，CaLP能够促进成骨细胞的分化和矿化过程。

The shell magazine in the feeder aims at how to realize the cannon-shot automatically running. A well designed shell magazine will reduce the difficulty of automatic gun, and it also boost up the feasibility of the gun.

供弹系统中的自动化弹仓就是针对大口径火炮弹丸的自动传送问题，研究自动化弹仓内弹丸的运动，并将其传送到目标位置，一个优秀的供弹系统可以简化自动装弹机的设计，从而提高火炮系统的可靠性。

Preparation and Application of water-borne curing agent from cashew nut shell liquid ;2. The dispersion was then modified with cashew nut shell liquid containing hydroxyl groups.

采用含有—OH的脱羧腰果壳液对其改性后，复合膜玻璃化温度上升、硬度提高，耐水性进一步改善。

Cashew shell oil - phenol - formaldehyde resin, synthesized with condensation polymerization of industrial cashew nut shell liquid and formaldehyde possesses good property - price ratio for paint application.

采用工业腰果壳液和甲醛缩聚反应合成具有良好性价比的腰果酚甲醛树脂，并以此配制了腰果树脂漆。

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