英语释义

1. an area of water (as in a lake or ocean) in which the level of dissolved oxygen is so depleted (as by the decay of an algal bloom) that most life cannot be sustained
This is the Gulf of Mexico's “dead zone,” which last summer reached the size of the state of New Jersey.
— Carol Kaesuk Yoon, New York Times, 20 Jan. 1998 In certain conditions, oxygen levels in the water can fall to dangerously low levels, creating what is commonly known as a dead zone. Fast-swimming creatures like fish can flee, but most bottom dwellers, such as shellfish, are likely to die.
— Mark Schrope, New Scientist, 9 Dec. 2006

2. an area where cell phone reception is very poor or unavailable
The Sleek has even improved reception near my local gym, which used to be a dead zone.
— Terry Gardner, Chicago Tribune, 5 Oct. 2010 “It would definitely be foolhardy to come into this wilderness park and expect cell coverage,” said [park ranger Jon] Preston, who gets reception on his phone about a mile up the trail from the Hoh Rain Forest Visitor Center. “Beyond that, you're in a dead zone … .”
— Rob Ollikainen, Peninsula Daily News (Port Angeles, Washington), 4 Sept. 2010

片语

dead-zone control死区控制

dead-zone lag死区滞后

blindness失明；无知；盲区

dead-zone compensator死区补偿器

dead water zone死水区

dead-zone free独家的全视角

dead-zone precompensation死区预补偿

dead band[自][电] 死区；无控制作用区

dead-zone fault死区故障

dead-zone regulator死区调节器

英汉例句

• the report also puts a priority on improving water quality, particularly on countering the giant dead zone that develops in late spring in the gulf of mexico.

  报告也很重视水质的提高，尤其是应对墨西哥海湾晚春时节出现的巨大死区。

• several new types of stator ground protection without dead zone are reviewed.

  本文首先综述几种新式无死区的空子接地保护。

• the 8, 000-sq-mile dead zone at the mouth of the mississippi river in the gulf of mexico has disrupted the region「s shrimp fishery for years.

  在墨西哥湾密西西比河河口处的8000平方米英里死区多年来一直扰乱着该地区的虾渔业。

• based on the simulation model, the effect of backlash and dead zone nonlinear factors on the system performances was analyzed, and the measures to improve the system performances were given.

  同时利用仿真模型分析了间隙、死区等非线性因素对系统精确度的影响，提出了提高传动系统性能的措施。

• dead zone exists in the egsb reactor, whose volume can be reduced by increasing thevup.

  反应器内存在死区，升流速度的提高可以有效减少死区容积。

• when lincoln goes to call the company, he realizes that they are in a dead zone for cell phones. sucre finds two smashed phones and vikan」s pda.

  林肯给「公司」打电话寻求帮助，但苏克雷发现被毁威肯的掌上电脑，原来格雷琴他们已经将手机毁掉了，他们追蹤不到信号。

• the algorithm makes fully use of initial value sensitivity and track ergodicity of chaos, overcoming the disadvantage of big searching dead zone existed in conventional chaotic mutation model.

  该算法充分利用混沌的初值敏感性和轨道遍历性，克服了已有混沌变异模型存在搜索盲区大的缺点。

• within seven years the black sea「s dead zone had largely vanished and fisheries had recovered.

  就在7年之内，黑海的死寂之区已经很大程度地消失，同时捕鱼业也得到恢复。

• the motion of ship is nonlinear. the operating machine has nonlinearity such as dead zone and relay.

  船舶运动呈非线性，操作机构有明显的死区、继电等非线性；

• according to simulation model, the effect of backlash and dead zone nonlinear factors on systematic performances was analyzed, and the measures of improving the systematic performances were given.

  利用仿真模型分析了间隙、死区等非线性因素对系统精度的影响，并给出了提高传动系统性能的措施。

• it stimulates a phytoplankton bloom and then an oxygen-depleted dead zone covering an area almost the size of new jersey.

  这些径流促进了浮游生物的繁盛，之后发生了氧气的不断减少，死亡区域不断蔓延到了整个新泽西州。

• scientists know what causes the dead zone -- too much nitrogen, but the solution might be hard to accept.

  科学家知道导致死水区是因为含氮量太高，但解决方案可能难以被接受。

• computer simulation and experimental results show the method can effectively overcome the influence of dead zone and friction and can improve positioning accuracy considerably.

  计算机仿真和实验结果表明，自适应控制能有效地克服系统中固有的死区、摩擦力影响，明显提高位置精度。

• considering the dead zone of electro-hydraulic position servo system, a simple model reference adaptive control is designed.

  本文根据具有死区特征的电液位置伺服系统的特点，设计了一种简单的模型参考自适应控制算法。

• according to simulation model the effect of backlash and dead zone nonlinear on system performances was analyzed, and the measures of improving the system performances were put forward.

  并根据仿真模型分析了间隙、死区等非线性因素对系统精确度的影响，提出了改进性能的措施。

• the dead zone is aptly named due to the low levels of oxygen, causing no aquatic life to survive in this area.

  死区之所以得名概因其含氧量低，造成该地区水生生物无法生存。

• analysis shows that the voltage operating dead zone is small and have more sensitivity than traditional power directional relay.

  分析表明其电压动作死区很小，比传统的功率方向元件具有更高的动作灵敏性。

• and new york」s governor has just pledged to end the dead zone along nearly 50 miles (80 km) of interstate in adirondack park between new york and montreal.

  纽约州长最近也发誓要结束一段在纽约与蒙特利尔之间穿过adirondack公园的50迈（80公里）州际高速公路的无讯号状况。

• the two methods can eliminate quantization errors and adjusting dead zone thoroughly, and provide a new way for designing fuzzy control system with high accuracy.

  这两种方法可完全消除量化误差和调节死区，为设计高精度模糊控制系统提供了一种新途径。