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The most basic type of wheel chair is the manual or self-propelled chair, comprised of two front wheels, two larger back wheels, a seat and two feet rests.

最基本的类型的轮椅是手动或自动推进主持会议，组成的两个前轮，两个较大的回轮子，座椅和两只脚休息。

Two-colour press: Two-unit machine which CAN print two colours on one side of a sheet in single pass.

双色机：有两个机组岢以一次过在纸的一面印两个颜色的印刷机。

Two- colour press: Two-unit machine which can print two colour s on one side of a sheet in single pass.

双色机：有两个机组岢以一次过在纸的一面印两个颜色的印刷机。

Dutar is a traditional long-necked two-stringed lute found in Central Asia and South Asia. Its name comes from the Persian word "dotar" for two strings (do "two", tar "string").

都塔尔是广泛使用於中亚及南亚地区的一种传统长颈二弦琴，它的名字来自於波斯文&dotar&，&do&为二、&tar&为弦的意思。

The simulations of two models are close to canopy albedo observation in this band. This indicates that the two-stream model can simulate the canopy albedo very well and the improvement of four-stream model is limited. The results also show that the albedo of the canopy modeled by the four-stream model is greatly improved than that of the two-stream model in the NIR band.

这表明在可见光波段，二流模式已经能够较好模拟冠层反照率，四流模式能够提高的精度范围有限；在近红外波段，因叶片散射率值较大，两个模式模拟结果差别较明显，四流模式模拟的冠层反照率相对二流模式的模拟结果更接近观测值。

The Eddington scheme is slightly more accurate in thicker optical depth region, while the two-stream DISORT is more accurate in the thin optical depth region where the solar zenith angle is less than 60 degree. Second, we compare the two two-stream schemes in a realistic atmospheric profile with gaseous transmission considered.

对于单层大气，Eddington 近似在光学厚度大的时候比二流离散纵标法更精确一点；而二流离散纵标法在光学厚度小且太阳天顶角小于60 度的时候更准确。

Take the common platoon quadrat in the formula most typical enemy two-row as the example analysis plate two-dimensional platoon type whole optimization question, unifies Yu Liao the use, establishes reasonable mathematical model which the two-dimensional platoon type whole optimizes.

以常见排样方式中最典型的对头双排为例分析板材2维排样的整体优化问题，结合余料的利用，建立2维排样整体优化的合理数学模型。

Take the common platoon quadrat in the formula most typical enemy two-row as the example analysis plate two-dimensional platoon type whole optimization question, unifies Yu Liao the use, establishes reasonable mathematical model which the two-dimensional platoon type whole optimizes.

以常见排样方式中最典型的对头双排为例分析板材二维排样的整体优化问题，结合余料的利用，建立二维排样整体优化的合理数学模型。

With the trip valve to achieve fast-forward and work into the conversion, using two two-pass solenoid valve for a two-speed conversion between work into, in order to ensure the dimensional accuracy of the feed, with only the block to limit stays.

用行程阀实现快进与工进的转换，用二位二通电磁换阀进行两个工进速度之间的转换，为了保证进给的尺寸精度，用止挡块停留来限位。

A pair of married couples in 78, it appears in the others could hang two conditions is true that the talented men, woman, sensible, but they always argue鸡飞狗跳, he too does not want her as beautiful, she does not know how to complain he was considerate; his offensive drop her at every turn, and she worries for his standoffish neighbor; he disgusted her weekend only buy fashion, is also not motivated, she hated him with the two-hand money into the bar with friends, bowling alley, it was renamed as the "looking for inspiration,"...... the most terrible noise when two or even signing a divorce agreement, but, because of opposition from both parents, they had to temporarily stay under the same roof.

一对结婚七八年了的夫妇，在旁人看来两个人的条件都挺不错，男的有才，女的明理，但他们总是吵得鸡飞狗跳，他嫌她不像自己希望的那样漂亮，她怨他一点也不懂得体贴；他厌恶她动不动串门，她烦恼他对邻居爱理不理；他反感她双休日只知买时装，一点也没上进心，她讨厌他手头有了俩钱就与朋友进歌厅、保龄球馆，还美其名曰&找灵感&……吵得最凶的时候，两人甚至草签了离婚协议，只是由于双方父母的反对，他们才不得不暂时呆在同一个屋檐下。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。