反射地

You'll find many different kinds of grow lights available; grow light reflectors are used in order to maximize and optimize light output of your grow lights.

你会发现许多不同种类的生长灯可用；增长轻型反射镜的使用，以便最大限度地利用和优化的光输出的增长灯。

Upon this Occasion of removing my Ammunition, I took occasion to open the Barrel of Powder which I took up out of the Sea, and which had been wet; and I found that the Water had penetrated about three or four Inches into the Powder, on every Side, which caking and growing hard, had preserv'd the inside like a Kernel in a Shell; so that I had near sixty Pound of very good Powder in the Center of the Cask, and this was an agreeable Discovery to me at that Time; so I carry'd all away thither, never keeping above two or three Pound of Powder with me in my Castle, for fear of a Surprize of any kind: I also carry'd thither all the Lead I had Belt for Bullets.

烧木炭的事顺便就谈到这里。再说有一天，我正在那里砍柴，忽然发现，在一片浓密的矮丛林后面，好像有一个深坑。我怀着好奇心想进去看看。我费力地走进洞口，发现里面相当大。我在里面站直了还绰绰有余，甚至还能再站一个人。可是说实在的，我一进去就赶快逃出来，因为我朝地穴深处一看，只见里面一片漆黑，在黑暗中，忽然看见有两只发亮的大眼睛，也不知道是魔鬼的眼睛，还是人的眼睛，在洞口射进去的微弱光线的反射下，那对眼睛像两颗星星闪闪发光。

Astronomers continue to study these reflection nebulas to better understand how interior stars form.

天文學家不停地研究這類反射星雲，以了解它們內部的恆星是如何誕生的。

The lack of a well-characterized in vitro model of load-induced cardiac hypertrophy has hampered further mechanistic investigation in this area, and little is known as to how mechanical load in initially converted into intracellular signals of gene regulation.

以往对心肌肥厚的实验研究基本上采用体内实验方法，然而，在体的实验研究由于受血液动力学、激素、神经反射的影响，不能恰当地反映一些因子或激素在心肌肥厚中的意义。

One always discovers them voluntarily or involuntarily at the same task, namely at dragging the partie honteuse of our inner world into the foreground and seeking the truly effective and directing agent, that which has been decisive in its evolution, in just that place where the intellectual pride of man would least desire to find it (in the vis inertiae of habit, for example, or in forgetfulness, or in a blind and chance mechanistic hooking-together of ideas, or in something purely passive, automatic, reflexive, molecular, and thoroughly stupid)—what is it really that always drives these psychologists in just this direction?

人们发现他们总是在有意或无意地做着同一件事：就是把我们内心世界中的龌龊部分暴露出来，从中寻找积极的、先进的、于人类发展有决定作用的因素，而这是些人类智慧的尊严最不愿意看到的部位，他们就是在这些习惯势力中，在健忘中，在盲目和偶然的思想网络和思想机制中，在任何一种纯粹被动的、机械的、反射性的、微不足道的和本质上是愚蠢的部位找寻积极的因素。到底是什么东西使得这些心理学家总是朝着这一个方向努力？

Results No statistical differences of amplitudes and latencies of the maximal electrical twitch of femoral nerve were found between involved and uninvolved limbs,but the amplitudes of quantitative patella tendon reflex of involved limbs were statistically lower than those of uninvolved limbs.

结果：健侧与患侧相比，膝OA的股神经最大电刺激的肌电波幅与潜伏期无显著差别，但患侧定量髌腱反射肌电波幅却显著地低于健侧。

Further more, because the friction force between needle and tissue is greatly dependent on muscle contraction, the excitability of the tissue near the stimulated point can be evaluated by measuring the interval between the start and stop of the needle rolling.

又由于针刺作用下肌肉的反射性收缩极大地影响了组织和针之间的摩擦力，所以测量从刺激开始到针停转所需的时间T〓还可以估计刺激点及其附近肌肉的兴奋性。

Also it is found that when the reflectivities of two antireflection and high-reflection coatings increase, and the stable oscillation of the master wave is established in the external cavity, the threshold current is the lowest, but the efficiency of the electro-optical conversion and the power of the output light reduce sharply.

并且发现当两端面的反射率增加，同时激射波长在外腔长度中形成稳定谐振时，激光器的阈值电流达到最小值，但相应的电光转换效率和出光功率会急剧地减小。

Chirp scaling algorithm is considered more efficient and widely applicable when the bistatic SAR system is in side-look or small squint angle mode,but in large squint angle case,the errors caused by Taylor expansion are so large that the algorithm could lose its precision.In such a case,an equivalent mono-static SAR range mode which has fewer errors than Taylor expansion with large squint angle is proposed to substitute the range history of bistatic SAR.Then bistatic SAR images with large squint angles are gotten by common Nonlinear CS algorithm.The effectivity of the method is verified by Matlab simulation.

在正侧视或小斜视情况下，CS算法具有较好的聚焦性能和广泛的适用性，但在斜视角较大的情况下，该算法将散焦而不能成像，因而提出了用等效的单基地距离模型来代替双基地距离历史的方法，解决了大斜视角情况下距离模型二阶近似误差较大的问题，并结合单基地非线性CS算法，实现了在大斜视角情况下的基于GPS反射信号的双基地SAR高精度成像，最后通过Matlab仿真进行了验证。

a system of along-track mode sar based on the gps is established.by seeing the gps signal as a chirp,chirp scaling algorithm of this mode with large squint angle is investigated.chirp scaling algorithm is considered more efficient and widely applicable when the bistatic sar system is in side-look or small squint angle mode,but in large squint angle case,the errors caused by taylor expansion are so large that the algorithm could lose its precision.in such a case,an equivalent mono-static sar range mode which has fewer errors than taylor expansion with large squint angle is proposed to substitute the range history of bistatic sar.then bistatic sar images with large squint angles are gotten by common nonlinear cs algorithm.the effectivity of the method is verified by matlab simulation.

摘 要：建立了基于gps的顺轨sar系统模型，通过将gps信号等效为chirp信号，研究了在该模式下的大斜视角chirp scaling算法。在正侧视或小斜视情况下，cs算法具有较好的聚焦性能和广泛的适用性，但在斜视角较大的情况下，该算法将散焦而不能成像，因而提出了用等效的单基地距离模型来代替双基地距离历史的方法，解决了大斜视角情况下距离模型二阶近似误差较大的问题，并结合单基地非线性cs算法，实现了在大斜视角情况下的基于gps反射信号的双基地sar高精度成像，最后通过matlab仿真进行了验证。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。