For grating in the optical pick-up head, the compensability between the longitudinal and transverse error practical references on the manufacture of grating.
对光学头分束光栅，其纵向加工误差与横向加工误差间存在的互补性，对光栅的具
有着
的参考
。
For grating in the optical pick-up head, the compensability between the longitudinal and transverse error practical references on the manufacture of grating.
对光学头分束光栅，其纵向加工误差与横向加工误差间存在的互补性，对光栅的具有着的参考。
It is shown that test aerospike nozzle has good altitude compensability of thrust.
验表明，塞式喷管具有良好的高度补偿能力和较高的效率。
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