If the centerboard is weighted, then it also provides weight low in the water, like a keel, to help keep the boat upright (although not as much weight as a fixed keel can supply).
如果选用了带负重的活动龙骨，那么它和固定龙骨一样提供水下的重量负荷，以使得船只能够保持直立(尽管它无法提供和固定龙骨一样大的重量)。
A keel also provides weight low under the water to lower the boat's center of gravity below the waterline, which is needed so that the boat bobs back upright if knocked over by wind or waves.
龙骨同时也增加了船只的底部重量，从而将船只重心降到吃水线之下，而这对于船只在被风浪打翻时能够得以及时回正是十分必要的。
For this reason, designers try to keep piston weight low, particularly in highspeed engines.
为此，设计者设法使活塞造的轻些，特别是高速发动机。
The car USES carbon fiber for its entire body construction in an attempt to keep the weight low.
车身通体使用碳纤维材料，降低了车体重量。
Outcomes of interest were birth weight, low birth weight, small size for gestational age, perinatal mortality and neonatal mortality.
检索结果中受到关注的是出生体重、低出生体重、小于胎龄儿、围产期死亡率和新生儿死亡率。
The whole system takes on characteristics of various of functions, small volume, little weight, low consumption and high integration, and it suits for applying to small UAV.
本系统具有功能全、体积小、重量轻、功耗低、集成度高等特点，非常适合应用于小型无人机。
The novel surveillance sensor aboard the microsatellite is used for imaging space objects. It demands the telescope with simple structure, light weight, low cost, and short implementation cycle.
微卫星装载的新型监视传感器对空间目标成像，要求其望远镜简单，重量轻，成本低和快速实现。
The results show that the control system designed based on FPGA and VHDL has many advantages such as small size and weight, low power consumption and high reliability.
结果表明，利用FPGA和VHDL设计的控制系统具有体积小、重量轻、功耗低和稳定性高等优点。
Scroll machine which possess characteristics of high efficiency, small bulk, light weight, low noise, simple structure and working smoothly etc, is used in supercharged vehicle engine.
涡旋机械由于其结构简单、效率高、体积小、噪声低、运转平稳等特点被应用于车用增压器技术中。
Two-stroke engine has its intrinsic advantages in terms of high specific power, compactness, light weight, low cost, etc.
二冲程汽油机具有升功率大、机械损失小、结构简单、制造成本低以及便于维修等特点。
White is often associated with low weight, low-fat food, and dairy products.
白色常与低体重、低脂食物和乳制品联系在一起。
Their light weight, low cost, and water resistance3 make them so convenient for carrying groceries, clothing, and other daily purchases that it's hard to imagine life without them.
它重量轻，成本低，还防水，这些优点使它们便于携带杂货、衣服，以及其他日常商品，很难想象没有它们的生活会是什么样子。
Micromachined vibratory gyroscopes processed by MEMS technology have the merit of small size, light weight, low cost, and have a variety of applications in many fields nowadays.
微电子机械系统(MEMS)技术加工的微机械陀螺仪具有体积小、重量轻、成本低、容易批量化生产等优点，当前在许多领域具有非常广阔的应用。
Product characteristics: high strength, light weight, low cost, fine workmanship, and convenient installation; what's more they are also effective, safe and reliable.
产品的特点是：强度高、重量轻、成本低、做工精细、安装方便快捷、支护效果好、安全可靠。
With the advantages of small size, light weight, low power dissipation and fast action, polarized magnetic system has been widely applied to military and civil electromagnetic relay.
极化磁系统具有体积小、重量轻、功耗低、灵敏度高、动作速度快等一系列优点，被广泛应用于军用与民用电磁继电器产品中。
Single gyro strapdown inertial navigation system (SGSINS) has many advantages, for example, small volume, light weight, low cost, high reliability and so on.
单陀螺捷联惯导系统（SGSINS）不仅具有和经典捷联惯导系统相同的基本功能，而且有体积小、重量轻、成本低、可靠性高等优点。
The airspeed meter has many merits, such as small volume, light weight, low power consumption and high reliability etc.
且该空速计具有体积小、重量轻、功耗低、工作可靠等特点。
Micromachined gyroscope based on MEMS technology has the advantages of small size, light weight, low power consumption, high reliability and so on, and has broad application in many area.
基于MEMS技术加工的微机械陀螺具有体积小、重量轻、功耗低、可靠性高等优点，当前在许多领域具有非常广阔的应用前景。
KT series fans is a state key new product with advantages of compact size, light weight, low noise high efficiency and easy installation.
KT系列离心通风机具有体积小、重量轻、噪声低，效率高、安装方便等特点，为国家重点新产品。
The utility model has the advantages of small whole machine volume, light weight, low energy consumption and high refrigerating efficiency.
本实用新型具有整机体积小、重量轻、能耗低、制冷效率高的特点。
The silica brick produced according to the formula has the advantages of small volume weight, low heat conductivity factor and high strength.
通过上述配方产生的硅砖具有产品容重小，导热系数低，强度高的优点。
The utility model has the advantages of simple device, light weight, low cost, safe and convenient operation, high efficiency, and energy saving.
本装置结构简单、重量轻、成本低，使用方便安全、效率高、节能。
Their light weight, low cost, and water resistance make them so convenient for carrying groceries, clothing, and other routine purchases that it's hard to imagine life without them.
塑料袋重量轻，成本低，还防水，这些优点使它们便于携带杂货，衣服，和其它日常商品，（以致我们）很难想象没有它们的生活会是什么样子。
The pressing instrument has the advantages of small size, light weight, low cost, easy use and strong operability. The utility model is suitable for various professionals and laymen to use.
该按压仪体积小、重量轻、造价低、简便易用、操作性强，适合于各种专业和非专业人员使用。
MEMS (micro electro mechanical system) is a new field which has a lot of advantages: small volume, light weight, low energy consumption, fast response, big batch and low cost etc.
微型机电系统是一个新兴的技术领域，其主要优点是体积小、重量轻、能耗少、响应快、大批量、成本低等，有广泛的应用前景。
A light weight, low consume and miniature laser range finder which is suitable for aircraft collision avoidance system is reported here.
报道了一种重量轻、功耗低、适合于小飞机防撞系统应用的小型激光测距仪。
This compressor is provided with small volume, light weight, low noise, small vibration and convenient generalization.
该压缩机体积小，重量轻，噪声低，振动小，便于推广。
The utility model has the advantages of simple structure, light weight, low cost and convenient operation.
本实用新型具有结构简单、重量轻、成本低，制造及使用方便等特点。
Compared with the traditional air purification filter core, the utility model has the advantages of appropriate wind-resistance coefficient, stable efficiency, light weight, low cost, and so on.
与传统的空气净化滤芯相比，本实用新型提供的滤芯具有合适的风阻系数及稳定的效能且质量小、成本低等优点。
The invention has the advantages that: simple structure, convenient application, prevention of poisoning and hurt of operator, light weight, low cost and easy maintenance.
优点是：结构简单、使用方便，能够避免人员中毒甚至伤亡，重量轻、造价低，便于维修。
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