高频

And the effects of the geometrical dimensions of the grating on high frequency characteristics of system were analyzed.

并针对矩形栅的两种典型结构进行数值计算，分析了金属栅的几何尺寸对系统高频特性的影响。

Compared with the dip loid, the tetrap loid plants possessed gigantism in leaves, floral, stomata of plantlets.

以青花菜品种'海兹'高频再生试管苗为外植体，利用秋水仙素离体诱导四倍体。

Methods Gingiva of 35 patients adding up to 55 teeth were excised to attain esthetics with electrotome.

通过对35名患者（55颗）需要冠修复的患牙进行高频电刀切龈手术，观察1年内其美学效果及牙周情况。

The GKS stability theorem for one-dimensional model of hyperbolic initial and boundary value problem, Trefethen's explanation and extension based on the concept of group velocity are generalized firstly. Another possible high-frequency instability mechanism in numerical realization of MTF is pointed out based on his explanation and extension, namely, coupling effect of outgoing harmonic wave along one direction and node motion in the other directions can reverse the energy propagation in multi-dimensional discrete grids.

本文概述了—维双曲型偏微分方程组初边值问题数值稳定性的GKS定理及Trefethen基于群速度概念对这一定理的解释和推广；并应用Trefethen的解释和推广指出了MTF在数值实现中可能出现的另一种高频失稳机制，即在多维离散网格中，沿某一空间方向的外行简谐波，由于与其他空间方向节点运动的耦合效应可以使能量传播方向反向。

Methods:The diameter of brachial arteries at rest, during reactive hyperaemia and after suck sublingual lozenge of glyceryl trinitrate in 46 subjects, consisted of 25 patients with hypertension and 18 controls.

应用高频超产检测高血压患者（25例）和正常血压患者（18例）休息、反应性充血时，舌下含服硝酸甘油后肱动脉内径的变化。

Objective To evaluate the role of high frequency ultrasound in the diagnosis of nodular goiter.

目的 探讨高频超声在结节性甲状腺肿诊断中的应用价值。

But many claim HFT comes at the price of gouging other investors.

但许多人声称高频交易操作是以欺骗其他消费者为代价的。

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Airborne gravimetry system is very accomplished in obtaining the mid-high frequency information of the earth's gravity field.

航空重力测量在快速获取地球重力场中高频信息方面具有无法替代的作用。

When high-intensity ultrasound acts on a liquid medi um, the cavitation can produce a high temperature above 5 000 K and a high press ure about 50 MPa at local sites, accompanied by a forceful impact wave and a jet with 400 km/h. The mechanical action can generate mechanical movement with high frequency whose acceleration can be 1 500 times of gravitational acceleration.

功率超声作用于液态媒质时，空化作用会在局部点产生 5 0 0 0K以上的高温和 50MPa左右的高压，并伴有强烈的冲击波和时速达 40 0km的射流，机械作用会产生高频变化的机械运动，加速度可达重力加速度的 1 50 0倍，这些独特的效应令其在化工领域中的应用越来越广泛。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！