叶轮可用角钢制成.The vanes are made of structural angle iron.这种装置的运转情况与叶轮泵很相似.This device operates similarly to the vane pump.叶轮有开式 、 半闭式和闭式三种, 如图 2-2 所示.Impeller are open, and closed three - Banbi, as shown in Figure 2 - 2 ....
The evidence was read out to the court in a dull monotone.证据被当庭呆板地宣读了一遍。He spoke in a flat monotone.他说话单调低沉。He was seen on TV delivering platitudes about the crisis in a monotone voice.人们看到他在电视上念经似地就危机问题老调重弹。...
Who can deny his stature as the world's greatest cellist?谁能否认他是世界上最伟大的大提琴演奏家呢？The cellist's bowing was very sensitive .那位大提琴手的弓法十分细腻。World - renowned cellist Yo - Yo Ma founded The Silk Road Project in 1998.世界闻...