Low levels of choline in the body can give rise to high blood-pressure.体内胆碱水平过低会引起高血压。Clinical symptoms found in young pigs suffering from choline deficiency are unthriftiness.已发现的缺乏胆碱的幼猪的临床症状是身体憔悴.By this mechanism, new...
Overgrown deciduous shrubs can be cut back at this time of year.过于繁茂的落叶灌木可以在每年的这个时候修剪....a large lawn edged with flowers and shrubs.四周种有鲜花和灌木的大片草地Shrubs and vines were putting on fresh garbs of green.灌木和葛藤披上了绿色的新装.Descri...
The key factor that controls aluminum hydrolyzing is activity of the aluminum powder.金属铝粉活性是制约单质铝发生水解反应的关键因素.The Paper mainly studies on hydrolyzing of lactose in milk at the low temperature.主要探讨了鲜牛乳中乳糖的低温水解.Methods � � ...
Reflection of a beam of light on the diaphragm falls on a phototransistor.经膜片反射的光束照射到光敏管上.A beam of light produced by a laser can weld metals.激光器发生的光束可以焊接金属.A beam of light produced a laser can weld metals.激光器发生的光束可以焊接金属...
较大的图画往往需要两三张胶片才能拍下来。Larger drawings tend to require two or three exposures to cover them.把电影胶片或幻灯片转换成视频应该不费吹灰之力。Transferring cine film or slides to video should be a doddle.标准的8毫米的胶片每秒放映16组镜头。Standard 8mm projects at 16 ...