Physicist Robert Goddard, rocketry pioneer, stands next to one of his experimental A-series rockets in front of his workshop in Roswell, New Mexico, in the 1930s.
物理学家罗伯特·戈达德是火箭先驱。1930年代，在新墨西哥罗斯威尔他的车间前，他站在他的实验性A系列一个火箭旁。
Experimental result in an enlarged workshop scale shows that the yield of methyl benzoate is 89.00%.
车间放大试验结果显示，苯甲酸甲酯的得率为89.00%。
Experimental result in an enlarged workshop scale shows that the yield of methyl benzoate is 89.00%.
车间放大试验结果显示，苯甲酸甲酯的得率为89.00%。
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