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- At low head, it's easy entering 'S' zone causing speed unstable, difficult synchronizing and reversed power afterwards, or un-stable at no-load speed after load rejection. 經(jīng)現場(chǎng)調試知，當機組在低水頭發(fā)電空載運行時(shí)，極易進(jìn)入"S"形特性區域，造成機組并網(wǎng)困難、逆功率或甩負荷后不能達到空載穩態(tài)。
- Vygotsky’s Zone of Proximal Development Inherent in scaffolded instruction is Lev Vygotsky’s (1978) idea of the zone of proximal development. 維果茨基的最近發(fā)展區 支架式教學(xué)的內涵是維果茨基的（1978）最近發(fā)展區概念。
- She nestled her head on his shoulder. 她將頭依偎在他的肩上。
- The deer lowered its head to drink from the pond. 鹿低下頭去喝池塘里的水。
- THT RESEARCH ON SMALL TOWN'S ZONE DIFFERENCE OF CHINA 中國小城鎮經(jīng)濟發(fā)展的地區差異研究
- He gave the little boy a clout on the head. 他在那小男孩的頭部打了一下。
- I saw the small girl topple over and hit her head. 我看見(jiàn)那小女孩栽了一跤，碰著(zhù)了頭。
- I was dazed by the blow on my head. 我的頭挨了一擊而覺(jué)得暈眩。
- She leaned her head back and whispered the news. 她向后仰著(zhù)頭，小聲說(shuō)出了這個(gè)消息。
- The horse kicked its fallen rider about the head. 那匹馬亂踢從它背上掉下來(lái)的騎手的頭部。
- A price of $1000 was set on the jewel thief's head. 懸賞1000美元抓住這個(gè)珠寶竊賊。
- As I was waiting for a bus a brick fell on my head. 當我在等公共汽車(chē)時(shí)，一塊磚頭落到了我的頭上。
- He because of bashful but low head. 他因羞愧而低下了頭。
- She greeted us with a nod of the head. 她向我們點(diǎn)點(diǎn)頭打招呼。
- He was sitting with his head buried in a book. 他坐著(zhù)埋頭看書(shū)。
- He batted the idea around in his head. 他腦子里反復思考這個(gè)想法。
- How can I enlighten your wooden head? 我怎么才能讓你這木頭疙瘩開(kāi)竅呢？
- The guilty man bowed his head in shame. 那個(gè)有罪的人羞愧地低下了頭。
- The heavy box landed crash on his head. 沉重的箱子嘩啦一聲掉到他的頭上。
- The horse perked up its head when I shouted. 我吆喝時(shí)那馬揚起了頭。
