变焦镜头可以把焦矩在相当大的范围内连续改变的镜头。
Zoom lens a lens whose focal length can be varied continuously over a substantial range.
变焦镜头可以把焦矩在相当大的范围内连续改变的镜头。一个变焦镜头可以代替多个固定焦矩镜头，但效果很可能比不上。
Zoom lens a lens whose focal length can be varied continuously over a substantial range. one zoom lens can replace several fixed focal -length lensed but results are likely to be inferior.
变焦镜头可以把焦矩在相当大的范围内连续改变的镜头。一个变焦镜头可以代替多个固定焦矩镜头，但效果很可能比不上。
Zoom lens a lens whose focal length can be varied continuously over a substantial range. one zoom lens can replace several fixed focal-length lensed but results are likely to be inferior.
在矩角控制过程中将连续的旋转磁场离散为步进磁场，通过控制电机定子电流实现对电磁转矩的控制。
The continuous rotating magnet field is transformed into discrete step field in the torque vector control and the electromagnet torque is controlled by means of regulating the stator current.
在讨论了连续信号循环频率的支撑区及循环矩支撑区的基础之上，给出了连续信号在时间离散化时不发生混迭的条件；
The supports of continuous-time signal's cyclic frequency and cyclic moment spectra are discussed, and the nonaliasing constraints have been established and discussed.
另一方面讨论了随机利率下的一些离散年金、连续年金和连续生存年金现值随机变量的一阶和二阶原点矩及其方差。
On the other hand, the moment, the second moment and variance of the present value random variables about some life annuities and annuities with random interest rate are gotten.
绝对连续随机变量列的记录次数的计数过程的矩精确完全收敛性的一般化定理。
The paper gives the quadrature's precision and complete convergence general theorem, which is about the i.
本文利用矩量法和一般的网络分析技术分析了各种E面膜片不连续性。
Various E-plane strip discontinuities are analyzed by the moment method and generalized network analysis technique.
设计并制造了一种新型的永磁式单相单拍运行步进电动机，它能在单极性电脉冲的控制下实现连续的起动和步进运动，电机绕组通电和断电时各转动一个步矩角。
A new type single-phase permanent-magnetic stepper motor is designed and manufactured. It realizes the stepping rotating action controlled by the inputting electric pulse's on-or-off point.
设计并制造了一种新型的永磁式单相单拍运行步进电动机，它能在单极性电脉冲的控制下实现连续的起动和步进运动，电机绕组通电和断电时各转动一个步矩角。
A new type single-phase permanent-magnetic stepper motor is designed and manufactured. It realizes the stepping rotating action controlled by the inputting electric pulse's on-or-off point.
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