X-15

X-15

1

Selection of Aspergillus niger X-15 and the Conditions for Cellulase Production

纤维素酶产生菌黑曲霉X-15的选育及其产酶条件
2

SpaceShipTwo , for example , is carried by airplane and released mid-air to fire its rocket , a design also used by the experimental X-15 space plane in the 1960s .

例如，太空飞船二号是由飞机携载和火箭空中发射，使用的设计也在1960年代发布的一个实验性的前身航天飞机原形。
3

HISTORY Airborne launches date back decades , most famously to the X-15 program of the 1950s and ' 60s , when manned rocket planes were carried aloft under the wing of a B-52 bomber and released on hypersonic research flights .

历史回顾机载发射可以追溯至几十年前，最著名的是上世纪50、60年代的X-15计划，当时一架B-52轰炸机的机翼下搭载了载人火箭飞机，并在超音速飞行的测试研究飞行器上发射。