查询词典 wavelengh

Amounts of the glycyrrhizic acid were determined by ultraviolet spectrophotometry at 252 nm wavelengh. Result The best extraction conditions from decoct method were that amount of affusion wate was 200 mL, extract 2 times, boiling time was 5 min, crash time was 20 s.

利用正交试验4因素3水平选择最佳提取条件(包括加水量、提取次数、煮沸时间、粉碎时间、溶剂量、振荡时间、氨水浓度)，用紫外分光光度法在252 nm波长处测定甘草酸含量。

One, the physical quantity that the fundamental point that the physical quantity that describes mechanical vibration and mechanical wave is proposition of the university entrance exam describes physical quantity of simple harmonic motion to the; such as amplitude, periodic, frequency, speed, acceleration, phasic, phasic difference describes mechanical wave has amplitude, wavelengh, velocity of wave, periodic, frequency to wait.

一、描述机械振动和机械波的物理量是高考命题的基础点描述简谐运动物理量有振幅、周期、频率、速度、加速度、相位、相位差等；描述机械波的物理量有振幅、波长、波速、周期、频率等。

Appear principle teacher to make such explanatory normally to adding those who show film when film ply is incident light when the 1/4 that grows in filmy medium wave, going up filmily, the road path difference of the reflex below is equal to half wavelengh fitly, offset each other consequently.

对于增透膜的增透原理老师通常作这样的解释当薄膜的厚度是入射光在薄膜中波长的1/4时，在薄膜的上、下面的反射光的路程差恰好等于半个波长，因而相互抵消。

Be in from the ground in the atmosphere advection layer of 50 kilometers of 15 ～, centered the ozone gas of on the earth 90%, although its chroma never exceeds 1/100000, all concentration rises to also have a even thinner than sole only, but it assimilated opposite substance effectively harmful, wavelengh is less than the UV-C of sun ultraviolet ray of 295nm, and opposite content hurtless, wavelengh is more than the UV-A of sun ultraviolet ray of 320nm to make them all pass however, opposite content has certain harm, wavelengh is in the UV-B of sun ultraviolet ray of 295 ～ 320nm also is absorbed for the most part.

在离地面15～50公里的大气平流层中，集中了地球上90%的臭氧气体，虽然其浓度从未超过十万分之一，全部集中起来也只有比鞋底还要薄的一层，但它却有效地吸收了对生物有害的，波长小于295nm 的太阳紫外线 UV-C，而对生物无害的，波长大于320nm 的太阳紫外线 UV-A 却让它们全部通过，对生物有一定危害，波长在295～320nm 的太阳紫外线 UV-B 大部分也被吸收。

Study K2-xLa2Ti3-xVxO10 serves as smooth activator to be more than 290 Nm ray radiation to fall in wavelengh, splitting decomposition aquatic product gives birth to hydric smooth catalysis active, discuss V5+ to adulterate the influence of active of smooth catalysis of K2La2Ti3O10 of mine of calcic to layer shape titanium.

探究K2-xLa2Ti3-xVxO10作为光催化剂在波长大于290 nm光辐射下，裂解水产生氢气的光催化活性，并讨论V5+掺杂对层状钙钛矿K2La2Ti3O10光催化活性的影响。

Everybody is going up the graph can see alleged UVA is the wave band with the longer wavelengh in ultraviolet ray, this wave band can make the person's skin blackens.

UVB的名词。大家在上图可以看到所谓UVA是紫外线中波长较长的波段，这个波段会使人的皮肤变黑。

The laser that compares two kinds of different wavelengh denudes system, medium holds back discharge fractional to the element of laser of 213 Nm solid effect improves function apparent.

相比两种不同波长的激光剥蚀系统，介质阻挡放电对213 nm固体激光的元素分馏效应改善功能明显。

Molecular laser follows in ArF (193 Nm) and laser of solid of Nd ∶ YAG (213 Nm) differs two kinds the laser of wavelengh denudes in the system, factor of elemental fractional distillation all compares groovy mode to fall to be close to more at 1, make clear use medium to hold back discharge to be opposite gas collosol beforehand effect of fractional distillation of the element after ionization is able to restrain effectively.

在ArF准分子激光(193 nm)和Nd∶YAG固体激光(213 nm)两种不同波长的激光剥蚀系统中，元素分馏因子均比常规模式下更接近于1，表明采用介质阻挡放电对气溶胶预电离后元素分馏效应得以有效抑制。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失