A field experiment was conducted in 1999 to investigate differences of adaxial and abaxial surface reflectance of rice leaves under 5 levels of nitrogen fertilization.
在田间条件下测定了 5个氮素水平处理的水稻叶片在分蘖、孕穗和抽穗期的上表面反射率和下表面反射率。
having a flat or flattened upper surface.
有平的上表面或使上表面变平的。
Brush the top with milk and sprinkle with sesame seeds.
在面包上表面涂上牛奶，撒上芝麻。
Study on Fabrication of Low-surface-energy Surface on Metallic Substrate;
金属基体上低表面能表面的制备研究
A precedes B in the alphabet.
字母表上A 在B 的前面。
skimming of waste water
自废水表面上撇取石油
Judging by externals, he is very strong.
从表面上来看，他很健壮。
I had an air of impudence.
我表面上趾高气扬。
Varnished furniture has a gloss.
上漆的家俱表面光滑。
oxidation free iron on the surface of the moon
月球表面上不氧化的铁
the first coat of paint applied to a surface.
涂在表面上的第一层漆。
make small marks into the surface of.
在表面上做一个小标志。
a deep opening in the earth's surface.
地球表面上的深开口。
oil the wooden surface.
在木制的表面上涂油。
antenna height above average terrain
平均地表面上天线高度
To spread(ink) thinly over a surface.
在表面上薄薄地涂（墨水）
indent a pattern in a metal surface
在金属表面压上花纹
Beauty is skin deep.
美貌只是表面上的东西。
slight ripples on the surface of the metal
金属表面上的小波纹.