恒定的

Agency officials first described proposals last December for a polar lunar base powered by near constant sunlight on solar panels.

航天署官员去年12月首次谈到了月球两极基地的计划，该基地以太阳能电池面板上的恒定太阳光作为能源。

Both results agree well basically. Based on Braginskii's formula for spark dynamic resistance, the nonlinear dynamic resistance of a spark gap used in a transmission line discharging circuit is calculated under the assumption of constant conductivity and variable conductivity.

基于Braginskii火花动态电阻公式，在假定火花开关电导率恒定与电导率渐变的条件下，利用传输线放电电路数值计算了气体火花开关的非线性动态电阻。

The main factor affecting weld quality of spot welding is net voltage fluctuation and the change of secondary loop impedance.

影响点焊电流恒定输出的主要因素是网压波动和二次回路阻抗的变化，二次回路阻抗变化会导致负载功率因数角变化。

Then SMES capacity to store energy can be used to maintain power output more constant, Kwa-Sur Tam et.al.

而SMES的储能容量可以用来有功的输出更为恒定。

Then SMES capacity to store energy can be used to maintain power output more constant, Kwa-Sur Tam et.

而SMES的储能容量可以用来有功的输出更为恒定。

In order to simulate as exactly as possible the actual sit ation of the flow in combined sewer during storm, the unsteady flow simulation is used to check the capability of the existing drainage networks to carry storm water and find out the overloaded pipes.

为了尽可能精确地模拟暴雨情况下合流制排水管网水流的实际情况，采用非恒定流模拟技术对现有管网的实际过水能力进行校核，查找出超载管段。

In order to simulate the non- steady flow experiment, 1 and 4 has carried on the small current capacity experiment to the plan, finally discovered appeared the expectation downriver low water level synaeresis to attack the sand to wash out the phenomenon.

为模拟非恒定流试验，对方案1和4进行了小流量试验，结果发现出现了预料的下游低水位缩水攻沙的冲刷现象。

Thus the pulse parameters were determined based on examination of the microstructure, grain size, hardness and tensile strength of the deposits obtained at different average current densities with constant pulse-on time (ton =2 ms) and pulse-off time (toff= 45 ms).

结果表明，在恒定脉冲模式下(脉冲导通时间2ms，脉冲断开时间45ms)，镀层晶粒尺寸随电流密度的上升而明显下降，硬度与强度则显著上升，当电流密度超过8A/dm2时，抗拉强度开始急剧下降而硬度保持6kN/mm2的高位基本不变，当超过12A/dm2时，硬度也开始下降。

The mass per unit volume of a substance under specified conditions of pressure and temperature .

在恒定压力下长度或面积或体积的微小变化和单位温度变化的比值。

The fractional change in length or area or volume per unit change in temperature at a given constant pressure.

在恒定压力下长度或面积或体积的微小变化和单位温度变化的比值。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。