OBJECTIVE : To establish a HPLC method for the determination of hydroquinone in compound hydroquinone cream.

Market prospect and production methods for pyrocatechol and hydroquinone are reviewed.

概述邻苯二酚、对苯二酚的市场前景、生产方法.

Hydroquinone and hydrogen peroxide build up in the insect's abdomen.

苯二酚和过氧化氢存在昆虫的腹部制造.

Hydroquinone is an important chemical material and intermediate in industrial chemistry.

对苯二酚是一种重要的化工原料和中间体.

Including two root, its surface as water roller transfer with hydroscopicity better water roll chemiluminscent.

一般均为两根, 它的表面同传水辊一样包有吸水性比较好的水辊绒.

At the same time both hydroscopicity there are bigger differences between fiber fast-absorbing water absorption, coatings.

同时两者的吸水性也存在比较大的差别,纤维吸水快, 涂料吸水慢.

For card printing and membership card manufacturing of printer materials desirable hydroscopicity, synthetic paper as well.

供制卡和会员卡制作用的承印材料最好是有吸水性的纸 、 合成纸也适用.

All the water of the earth's surface is included in the hydrosphere.

地球表面的水都属于水圈的范畴.

The hydrosphere and the lithosphere together form the Earth's surface.

水圈与岩石圈一起形成地球的表面.

These dissolved materials thus pass from the lithosphere to the hydrosphere.

因此,这些溶解了的物质就从岩石圈转移到水圈.

Good ventilation and be beneficial for hydrosphere reeked, an keep foot clean and comfortable.

利于散发汗热、透气性强; 保持足部干爽、舒适.

This date ( month-year ) also indicates the original hydrostatic test.

该日期 ( 月 -年 ) 还说明了最初的流体静力学测试的日期.

The velocities are independent of hydrostatic pressures.

速度与流体静压力无关.

In particular, the powerful and recently developed hydrostatic reconstruction method is detailed.

尤其, 这种强有力和最近发展的液压静力重建方法被详述.

Over pumping of ground-waters produces a difference in hydrostatic head in favor of the seawater.

过量抽取地下水时,产生利于海水的流体静力学水位差.

Below the water table at static equilibrium, hydrostatic pressure potential increases with increasing depth.

在水面以下,当静态平衡时, 静水压力随深度而增加.

The aperture restrictor is an important component in the hydrostatic support system.

液体静压支承中节流器是不可缺少的重要组成部分.

Sealing type upstream pumping principle are hydrodynamic pressure and hydrostatic pressure equilibrium.

上游式泵送密封的原理是动水压力和静水压力相平衡.

An electric-hydraulic proportional control over cannon hydrostatic driving system was developed.

将静压传动应用于火炮的驱动装置中,实现火炮驱动系统的电液比例控制.

It is this hydrostatic pressure that maintains the turgidity of plant parts.

就是这种流体静压维持植物各部分的膨胀度.

Topics covered include hydrostatics, transverse stability, and incorporation of the design spiral into one's working methods.

涵盖主题包括静水力学, 横向稳定性, 以及将设计螺旋融会到个人的工作方法中.