... [close planting;serried row planting] 缩小栽种的行距或株距,使单位面种的栽种密度增加 [seal off] 严密封闭杜绝出入 [airtight] 紧密不漏气或密不通风 ...
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seal off the launch bunker 把火箭仓库锁上 ; 把火箭堆栈锁上 ; 关闭掩体
Seal-off 密封式
seal off stain 底色封闭 ; 封闭底色
seal-off bushing 密封套管
case seal off 箱封条脱落
seal-off mercury-arc rectifier 封闭汞弧整流器
to seal off 封闭
seal off detail 封条脱落 ; 封条失落铅封脱落封条脱落
PHRASAL VERB If one object or area is sealed off from another, there is a physical barrier between them, so that nothing can pass between them. 封闭
Windows are usually sealed off.
窗户通常是封闭的。
→see seal
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