因此祭仪对于维护世界的延续是必不可少的。
So it's essential for the maintenance, preservation of the world.
卫星投影仪的另一个优势是耗电少，比目前市场流行的matrix或LED技术的投影仪平均降低30%。
Another significant advantage: this projector USES very little energy, requiring on average 30% less current than the matrix - or LED-based technology currently available on the market.
虽然试验样本集太小了，以至于无法从统计上给出显著有意义的定论，但是Dickson博士说，这些使用了CogPit专有的自适应式自动驾驶仪的任务与那些没有用这些装备的任务相比，遇到的危险少多了。
Although the sample was too small to be statistically significant, the missions that used the CogPit's adaptive-autopilot feature suffered less damage than those that did not, says Dr Dickson.
但事实上，来自监测仪的数据显示，使用这种技术的人总体上比另一组的人锻炼得少。
But in fact, the data from the monitors shows that those wearing the technology generally exercised less than those in the other group.
在测试设备的经验，例如数字万用表，示波器和I2C分析仪，电力供应是必不可少。
Experience in test equipment such as digital multimeter, oscilloscope, I2C analyzer, and power suppliers is a essential.
多波束测深仪是高精度、高效率的地形测绘设备，适合大面积的扫海测量作业，是21世纪水下地形测量必不可少的测绘仪器。
Multi-Beam Echo Sounder is an absolutely necessary seafloor mapping device with high accuracy and high efficient at 21st century. It is much fitted to sweep mapping for wide area.
该系统结构紧凑，外部连线少且操作简单，并且很容易扩展和挂接新的测井仪。
The structure of this system is compact with less external connections and easy operations. It is easy to interface new logging tools.
单波束测深仪在现在的海上地质调查中被广泛应用，潮汐校正是必不可少的内容。
Single beam bathymetry is widely used in marine geologic survey. Tidal calibration is very necessary to guarantee correct results of the bathymetry.
系统全部用硬件，线路简单，采用元件少，易于和监护仪、记录仪等共同组成系统。
It is an all-hardwared system requiring only a least amount of IC. Circuit is simple with few components. It is easy to form an integral system with the monitoring instrument and recorder.
镜头的研制是OT F测定仪标定中必不可少的环节。
The development of OTF standard lens is a key link in the calibration of OTF tester.
镜头的研制是OT F测定仪标定中必不可少的环节。
The development of OTF standard lens is a key link in the calibration of OTF tester.
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